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1.
Vet Med Sci ; 7(1): 136-140, 2021 01.
Article in English | MEDLINE | ID: mdl-32810898

ABSTRACT

Traumatic reticuloperitonitis combined with embolic pneumonia and hepatitis is unusual signs of foreign body syndrome in cattle. A 4-year-old Holstein bull presented decreased appetite, dry cough, progressive weight loss, sternal recumbence and reluctance to stand and move. Laboratory tests revealed leucocytosis (18.4 × 103 /µl) accompanied by neutrophilia (10.48 × 103 /µl), and monocytosis (1.28 × 103 /µl), hyperglobulinaemia (6.3 g/dl), hypoalbuminaemia (1.5 g/dl), hyperfibrinogenaemia (10 g/L) and severe increase in gamma-glutamyl transferase activity (1,216 U/L). Reticular ultrasonographical examination showed a large amount of hyperechoic and hypoechoic content between the reticular serosa and the hepatic visceral surface. The main gross findings included fibrin deposition and adhesions between the reticulum, liver and diaphragm surfaces; a 4.0 mm in diameter transmural reticular perforation; a 12.0-cm diameter and scarce small randomly abscesses in the liver's parenchyma. The lungs presented multifocal areas of suppurative embolic foci (pulmonary abscesses), interstitial emphysema and multifocal fibrin deposition on the pleural surface. Ancillary diagnostic tests, such as ultrasonography and laboratory test, associated with clinical evaluation, may increase the accuracy of the correct diagnosis and avoid wasting time and money on untreatable cases.


Subject(s)
Cattle Diseases/diagnosis , Foreign Bodies/veterinary , Hepatitis, Animal/diagnosis , Peritonitis/veterinary , Pneumonia/veterinary , Animals , Cattle , Cattle Diseases/diagnostic imaging , Cattle Diseases/etiology , Foreign Bodies/complications , Hepatitis, Animal/diagnostic imaging , Hepatitis, Animal/etiology , Male , Peritonitis/diagnosis , Peritonitis/diagnostic imaging , Peritonitis/etiology , Pneumonia/diagnosis , Pneumonia/diagnostic imaging , Pneumonia/etiology
2.
Braz J Microbiol ; 51(2): 827-835, 2020 Jun.
Article in English | MEDLINE | ID: mdl-31907798

ABSTRACT

Bovine alphaherpesvirus type 5 (BoHV-5) is one of the main agents responsible for meningoencephalitis in cattle in Brazil, causing significant economic losses. It is known that other viruses of the Herpesviridae family such as Bovine alphaherpesvirus type 1, Swine alphaherpesvirus type 1, and the Human alphaherpesvirus types 1 and 2 encode genes homologous to BoHV-5, with recognized action in the control of apoptosis. The objective of this work was to express the BoHV-5 US3 gene in a baculovirus-based expression system for the production of the serine/threonine kinase protein and to evaluate its activity in the control of apoptosis in vitro. A recombinant baculovirus derived from the Autographa californica multiple nucleopolyhedrovirus (AcMNPV) containing the US3 gene and a deletion in the baculovirus anti-apoptotic p35 gene was constructed using the Bac-to-Bac™ system. This recombinant baculovirus was used to evaluate the anti-apoptotic activity of the recombinant US3 protein in insect cells comparing with two other AcMNPV recombinants, one containing a functional copy of the AcMNPV anti-apoptotic p35 gene and an AcMNPV p35 knockout virus with the anti-apoptotic iap-3 gene from Anticarsia gemmatalis multiple nucleopolyhedrovirus (AgMNPV). We found that the caspase level was higher in insect cells infected with the US3-contanining recombinant virus than in cells infected with the AcMNPV recombinants containing the p35 and iap-3 genes. These results indicate that the BoHV-5 US3 protein kinase gene is not able to block apoptosis in insect cells induced by the infection of a p35 knockout AcMNPV.


Subject(s)
Alphaherpesvirinae/enzymology , Apoptosis , Baculoviridae/chemistry , Baculoviridae/genetics , Protein Kinases/metabolism , Viral Proteins/genetics , Alphaherpesvirinae/genetics , Animals , Brazil , Cattle , Nucleopolyhedroviruses/genetics , Protein Kinases/genetics , Recombinant Proteins , Sf9 Cells , Spodoptera , Virus Replication
3.
Pesqui. vet. bras ; 38(5): 902-912, May 2018. tab, graf
Article in Portuguese | LILACS | ID: biblio-955420

ABSTRACT

Foram estudados 26 casos de meningoencefalite por herpesvírus bovino (BoHV) diagnosticados entre 2010-2016, no Estado de Goiás (GO). A doença acometeu principalmente bovinos jovens, entre 60 dias a 18 meses de idade. Não houve associação entre os casos e o sexo dos bovinos e a sazonalidade. A doença foi observada em todas as cinco Mesorregiões do Estado, com uma frequência maior nas Mesorregiões Sul e Centro. Os sinais clínicos mais frequentemente observados incluíram cegueira, incoordenação, sialorreia e ataxia. As principais alterações macroscópicas observadas incluíram congestão com tumefação e achatamento das circunvoluções, amolecimento e amarelamento do córtex telencefálico e focos de hemorragia. Em cinco encéfalos, não foram observadas alterações macroscópicas e em quatro as alterações não foram informadas. As principais alterações histológicas ocorreram no córtex telencefálico, principalmente o córtex frontal e parietal, mas em alguns casos, lesões de menor intensidade foram também observadas no tálamo, núcleos basais, mesencéfalo, ponte, bulbo, cerebelo e hipocampo. Todos os casos apresentaram meningoencefalite linfoplasmocítica e corpúsculos de inclusão intranucleares basofílicos em astrócitos e, eventualmente, em neurônios. Outras lesões frequentes incluíram necrose neuronal laminar segmentar (neurônio vermelho), espongiose, tumefação do núcleo das células endoteliais, gliose focal ou difusa, hipertrofia de astrócitos, infiltração por células gitter, congestão e hemorragia. Lesões menos comuns incluíram astrócitos Alzheimer tipo II, lesão residual e neuronofagia. A necrose neuronal e o edema (espongiose) foram mais acentuados nas camadas granular externa, molecular, de células piramidais e granular interna dos telencéfalos. Tanto os giros quanto os sulcos foram afetados igualmente. Dos 26 casos, o DNA de BoHV-5 foi amplificado em dois (7,69%) casos, enquanto que o de BoHV-1 foi identificado em um caso (3,84%). Nos casos positivos para BoHV-5 foram usadas amostras fixadas em formol a 10% e incluídas em parafina e amostras congeladas foram utilizadas no caso positivo para BoHV-1.(AU)


Twenty six cases of bovine herpetic meningoencephalitis diagnosed from 2010-2016 in Goiás state, Brazil, were studied. Affected cattle were mainly 60-day to 18-month-old. There was no association of the disease with sex and seasonality. The disease was found in all five mesoregions with a higher prevalence in southern and central state of Goiás. Clinical signs more frequently observed included blindness, incoordination, circling, excessive salivation, and ataxia. Main gross findings in the brain were congestion with swelling and flattening of gyri, softening and yellow discoloration of cerebral cortex and hemorrhagic foci. In five cases no gross changes were observed in the brain and in four cases there is no information. The main histopathological changes were in the cortex of telencephalic lobes, especially the frontal and parietal; however less prominent and less frequently found lesions occurred in the thalamus, basal nuclei, midbrain, pons, medulla oblongata, cerebellum, and hippocampus. All cases presented lymphoplasmocytic meningoencephalitis and intranuclear basophilic inclusion bodies in astrocytes, less commonly in neurons. Other frequent lesions included segmental laminar neuronal necrosis (red neurons), spongiosis, swollen vascular endothelial nuclei, gliosis (focal and diffuse), hypertrophy of astrocytes, infiltration of gitter cells, congestion, and hemorrhage. Lesions less frequently observed were Alzheimer type II astrocytes, residual lesion and neuronophagia. The most frequently affected cortical layers by neuronal necrosis and edema were external and internal granular, molecular, and pyramidal cell layers. Gyri and sulci were equally affected. Of the 26 cases, in 2 (7.69%) the DNA of BoHV-5 was amplified with samples fixed in 10% formalin and paraffin-embedded. DNA of BoHV-1 was identified in another case (3.84%) where, positive to BoHV-1, fresh samples were used.(AU)


Subject(s)
Animals , Cattle , Cattle/abnormalities , Cattle/injuries , Encephalitis, Herpes Simplex/veterinary , Encephalitis, Herpes Simplex/epidemiology , Noxae
4.
Pesqui. vet. bras ; 35(7): 627-636, jul. 2015. tab, graf
Article in Portuguese | LILACS | ID: lil-766209

ABSTRACT

As enfermidades que acometem a cavidade nasal de pequenos ruminantes podem causar prejuízos aos rebanhos de ovinos e caprinos na região central do Brasil. Foi realizado estudo retrospectivo dos laudos de necropsia do Laboratório de Patologia Veterinária da Universidade de Brasília (LPV-UnB) nos anos de 2003 a 2014 para verificar a ocorrência das doenças que acometeram a cavidade nasal de pequenos ruminantes. Foram analisados 463 protocolos de ovinos e 75 de caprinos totalizando 538 casos. Seis ovinos (6/463 1,29%) foram necropsiados com rinite granulomatosa micótica ou oomicótica e 22 animais do estudo (22/538; 4,08%) tiveram o diagnóstico de oestrose, sendo 86,36% ovinos e 13,64% caprinos. As rinites piogranulomatosas em ovinos ocorreram em áreas alagadas, com abundante material vegetal em decomposição. Os ovinos com pitiose rinofacial apresentaram como principais alterações aumento de volume na região nasal devido a extensas lesões granulomatosas associadas a necrose tecidual, caracterizadas por inúmeros macrófagos e polimorfonucleares circundando centros necróticos contendo o agente envolto por reação de Splendore-Hoeppli. Os ovinos com conidiobolomicose exibiram extensas áreas de necrose e inflamação piogranulomatosa, associadas à presença de hifas fúngicas na nasofaringe e também na região peribulbar e exoftalmia. A maioria dos animais com oestrose não apresentou alterações clínico-patológicas significativas, apesar de serem encontradas larvas principalmente nos seios e conchas nasais, traqueia e seio paranasal. A importância dessas enfermidades ainda é pouco conhecida na região, sendo de grande relevância que as condições clínico-patológicas e epidemiológicas sejam elucidadas para o diagnóstico, o controle e a prevenção, para evitar a expansão e prejuízos para os rebanhos...


Nasal cavity diseases that affect small ruminants can cause losses to sheep and goat herds in Central Brazil. A retrospective study of the University of Brasilia´s Veterinary Pathology Laboratory autopsy reports from 2003 to 2014 was conducted to verify the occurrence of small ruminants nasal cavity diseases. Six necropsied sheep (6/463 1.29%) showed mycotic or oomicotic granulomatous rhinitis and 22 animals (22/538, 4.08%) presented oestrosis diagnosis, affecting 86.36% of sheep and 13.64% of goats. The pyogranulomatous rhinitis in sheep occurred in flooded areas with abundant plant material decomposing. Rhinofacial pythiosis infection in animals showed as major changes swelling in the nasal region due to extensive granulomatous lesions associated with tissue necrosis, characterized by numerous macrophages and polymorphonuclear cells surrounding necrotic centers containing the agent surrounded by Splendore-Hoeppli reaction. Sheep with conidiobolomycosis showed extensive areas of necrosis and pyogranulomatous inflammation associated with fungal hyphae, localized in the nasopharynx and also in peribulbar region and exophthalmia. Most animals with oestrosis showed no significant clinical and pathological changes, even with the presence of larvae mainly in the sinuses and nasal turbinates, trachea and paranasal sinus. The importance of such diseases is still unknown in the region, and the knowledge of the clinical-pathological and epidemiological conditions is of great relevance for the diagnosis, control and prevention to avoid the expansion and losses to livestock...


Subject(s)
Animals , Nasal Cavity/pathology , Rhinitis/physiopathology , Rhinitis/veterinary , Sheep , Conidiobolus/pathogenicity , Immunohistochemistry/veterinary , Pythiosis/pathology , Pythium/pathogenicity , Polymerase Chain Reaction/veterinary
5.
Mucosal Immunol ; 8(3): 627-39, 2015 May.
Article in English | MEDLINE | ID: mdl-25354319

ABSTRACT

Streptococcus pneumoniae is a common cause of pneumonia and infective exacerbations of chronic lung disease, yet there are few data on how adaptive immunity can specifically prevent S. pneumoniae lung infection. We have used a murine model of nasopharyngeal colonization by the serotype 19F S. pneumoniae strain EF3030 followed by lung infection to investigate whether colonization protects against subsequent lung infection and the mechanisms involved. EF3030 colonization induced systemic and local immunoglobulin G against a limited number of S. pneumoniae protein antigens rather than capsular polysaccharide. During lung infection, previously colonized mice had increased early cytokine responses and neutrophil recruitment and reduced bacterial colony-forming units in the lungs and bronchoalveolar lavage fluid compared with control mice. Colonization-induced protection was lost when experiments were repeated in B-cell- or neutrophil-deficient mice. Furthermore, the improved interleukin (IL)-17 response to infection in previously colonized mice was abolished by depletion of CD4+ cells, and prior colonization did not protect against lung infection in mice depleted of CD4+ cells or IL17. Together these data show that naturally acquired protective immunity to S. pneumoniae lung infection requires both humoral and cell-mediated immune responses, providing a template for the design of improved vaccines that can specifically prevent pneumonia or acute bronchitis.


Subject(s)
Antibodies, Bacterial/biosynthesis , Immunity, Cellular , Immunity, Humoral , Immunoglobulin G/biosynthesis , Interleukin-17/immunology , Pneumonia, Pneumococcal/immunology , Streptococcus pneumoniae/immunology , Animals , Antigens, Bacterial/immunology , B-Lymphocytes/immunology , B-Lymphocytes/microbiology , Bronchoalveolar Lavage Fluid/chemistry , Bronchoalveolar Lavage Fluid/immunology , Bronchoalveolar Lavage Fluid/microbiology , CD4-Positive T-Lymphocytes/immunology , CD4-Positive T-Lymphocytes/microbiology , Colony Count, Microbial , Interleukin-17/biosynthesis , Lymphocyte Depletion , Mice , Mice, Inbred C57BL , Nasopharynx/immunology , Nasopharynx/microbiology , Neutrophils/immunology , Neutrophils/microbiology , Pneumonia, Pneumococcal/microbiology , Pneumonia, Pneumococcal/pathology , Polysaccharides, Bacterial/immunology
7.
QJM ; 107(3): 201-6, 2014 Mar.
Article in English | MEDLINE | ID: mdl-24259720

ABSTRACT

BACKGROUND: The impact of the introduction of Endobronchial ultrasound with real-time guided transbronchial needle aspiration (EBUS-TBNA) on the use of diagnostic modalities for tissue acquisition in patients with lung cancer is unknown. METHODS: A retrospective review of 328 consecutive patients diagnosed with lung cancer at a university teaching hospital, where they first presented in London in 2007, 2009 and 2011. EBUS was introduced in 2008. RESULTS: In total, 316 patients were included in the analysis. Comparing 2007 with 2011 data, there has been a significant reduction in standard bronchoscopy (P < 0.0001) and mediastinoscopy (P = 0.02). The proportion of cases diagnosed by EBUS-TBNA significantly increased from 0% in 2007 to 26.7% in 2009 and 25.4% in 2011 (P < 0.0001). In the same period there has also been an increased trend in the proportion of patients going directly to surgery without pathological confirmation with a 9.6% increase in diagnoses obtained at thoracotomy (P = 0.0526). CONCLUSION: The use of diagnostic modalities that provide information on diagnosis and staging in a single intervention are increasing. At our hospital, the use of EBUS-TBNA for providing a lung cancer diagnosis is increasing and this has led to a significant reduction in standard bronchoscopies and mediastinoscopies. These changes in practice may have implications for future service provision, training and commissioning.


Subject(s)
Endoscopic Ultrasound-Guided Fine Needle Aspiration/statistics & numerical data , Lung Neoplasms/pathology , Tissue and Organ Harvesting/methods , Aged , Bronchoscopy/statistics & numerical data , Female , Humans , Male , Mediastinoscopy/statistics & numerical data , Neoplasm Staging/methods , Retrospective Studies , Sensitivity and Specificity
9.
Pesqui. vet. bras ; 32(12): 1272-1280, Dec. 2012. ilus, tab
Article in Portuguese | LILACS | ID: lil-662559

ABSTRACT

Brachiaria spp. é a principal forrageira utilizada para ruminantes no Brasil Central, mas a sua toxicidade, devida à presença de saponinas esteroidais, torna-se um importante entrave à sua utilização. Neste trabalho descrevem-se 34 surtos e um foco de intoxicação por Brachiaria spp em ovinos, que ocorreram em diferentes épocas do ano. A morbidade geral foi de 23,2% e a letalidade foi 88,3%. O tempo que os animais permaneceram no pasto até o surgimento dos sinais clínicos da intoxicação por Brachiaria spp. variou de 15 dias até mais de 12 meses. Em 90,1% dos surtos os animais eram menores de 12 meses de idade. O curso clínico da intoxicação variou de 2 a 45 dias. Os sinais clínicos e as lesões macroscópicas foram características de fotossenssibilização hepatógena, no entanto, nos casos mais agudos não foram observadas dermatite nem icterícia, ocorrendo severo edema em face e orelhas. Na histologia do fígado as lesões mais características foram a presença de macrófagos com citoplasma espumoso, encontrados principalmente nos sinusoides hepáticos e, às vezes, com imagens negativas de cristais acutiformes no citoplasma. Em oito das 11 fazendas visitadas os surtos ocorreram em pastagens de Brachiaria decumbens; em duas em pastagens de B. brizantha e uma em pastagem de B. decumbens, B. humidicola e Andropogon sp. As concentrações de saponinas nas pastagens, em 5 surtos, variou de 0.3% a 2.56%. As informações geradas neste trabalho permitem a proposta de medidas para controle e profilaxia da intoxicação por Brachiaria spp. no Brasil Central.


Brachiaria spp. is the main pasture for ruminants in Central-Brazil, but the crucial problem for their utilization is the toxicity due to the presence of steroidal saponins. This paper reports 35 outbreaks of poisoning by Brachiaria spp in sheep. The poisoning occurred in different seasons of the year. Mean morbidity was 23.2% and mean lethality was 88.3%. The occurrence of clinical signs after the introduction of the sheep into the pastures varied from 15 days to more than 12 months. In 90.1% of the outbreaks, sheep younger than 12 months of age were affected. Clinical signs and gross lesions were characteristic of hepatogenous photosensitization, but more acute cases showed edema of the face and ears, without dermatitis or jaundice. The main histologic lesions of the liver were the presence of macrophages with foamy cytoplasm, found mainly in sinusoids, and sometimes containing negative images of crystals. In eight out of 11 farms visited the outbreaks occurred in Brachiaria decumbens pastures, two in B. brizantha pastures, and one in a pasture of B. decumbens, B. humidicola, and Andropogon sp. Saponin concentrations in the pastures of 11 outbreaks varied from 0.3 to 2.56%. The information generated by this report allows the proposal of measures for control and prevention of Brachiaria spp. poisoning in Central-Brazil.


Subject(s)
Animals , Brachiaria/poisoning , Poisoning/prevention & control , Poisoning/veterinary , Sheep/metabolism , Autopsy , Signs and Symptoms , Saponins/poisoning
11.
SADJ ; 65(1): 14, 16-8, 2010 Feb.
Article in English | MEDLINE | ID: mdl-20411797

ABSTRACT

Rapidly progressive facial lymphoedema developing concurrently with, or immediately after rapid enlargment of oral Kaposi sarcoma (KS) in HIV-seropositive highly active antiretroviral treatment (HAART)-naïve subjects, foretokens death. We present here an unusual case of HIV-KS in an 11-year-old HIV-seropositive HAART-naïve boy. Our patient's KS disease had had a fulminant course characterised by rapidly progressing oral HIV-KS, resorption of the mandibular alveolar bone process beneath some of the HIV-KS lesions, and rapidly progressive facial lymphoedema. He died 3 weeks after the onset of facial lymphoedema.


Subject(s)
AIDS-Related Opportunistic Infections/diagnosis , Face , Lymphedema/diagnosis , Mouth Neoplasms/diagnosis , Sarcoma, Kaposi/diagnosis , Bone Resorption/diagnosis , Child , Disease Progression , Fatal Outcome , Gingival Neoplasms/diagnosis , Humans , Male , Mandibular Diseases/diagnosis , Tongue Neoplasms/diagnosis
12.
Emerg Med J ; 25(8): 510-3, 2008 Aug.
Article in English | MEDLINE | ID: mdl-18660404

ABSTRACT

BACKGROUND: Near-patient testing allows rapid availability of results to enable prompt decision-making. Potassium abnormalities are common in acutely ill patients and can be associated with life-threatening complications. At times there is uncertainty whether clinical decisions can be based on the potassium result obtained from arterial blood gas (ABG) analysers or if laboratory values should be awaited. OBJECTIVES: To determine the opinion of clinicians regarding the use of blood gas analysers to measure potassium and to determine the level of agreement between blood gas analyser and laboratory measurements of potassium in arterial blood samples. METHOD: Survey of 64 doctors using a questionnaire and a retrospective comparative study of 529 paired results of ABG and arterial laboratory measurements of potassium in 121 critically ill patients. RESULTS: 51.6% of the doctors would wait for laboratory confirmation and 48.4% would base clinical decisions on results obtained from the blood gas analyser. The difference between the means of potassium values from the two methods is 0.03 mmol/l (95% CI 0.011 to 0.056; p = 0.0041). The 95% limits of agreement were from -0.485 mmol/l (95% CI -0.524 to -0.447) to 0.551 mmol/l (95% CI 0.513 to 0.590). 95% of the results fell within the difference limits of 0.5 mmol/l. CONCLUSIONS: Most clinicians still await laboratory confirmation of results obtained from blood gas analysers but in this setting there is sufficient agreement between the results obtained from the authors' blood gas analyser and a laboratory analyser to enable effective clinical decisions to be made.


Subject(s)
Blood Gas Analysis/standards , Critical Illness , Medical Staff, Hospital/standards , Point-of-Care Systems/standards , Potassium/metabolism , Arteries , Attitude of Health Personnel , Humans , Medical Staff, Hospital/psychology
13.
Can Vet J ; 46(4): 345-8, 2005 Apr.
Article in English | MEDLINE | ID: mdl-15943122

ABSTRACT

The increased frequency of diseases, especially those of the hoof, cause economic losses, such as premature culling of affected animals, decreased milk production, weight loss, reduced fertility, and the high costs of treatment. A great variety of hoof conditions may affect cattle, one of them is digital dermatitis. These conditions are probably due to multiple factorial diseases and present with similar clinical signs. Bovine lameness is typically treated by foot trimming and debridment of the lesions, coupled when necessary with systemic antibiotics and therapeutic footbaths, which results in a clinical cure in the majority of the cases. The objective of this study was to evaluate the topical action of sodium hypochlorite associated with the systemic use of oxytetracycline for the treatment of wounds clinically diagnosed as bovine digital dermatitis. One hundred and twenty Holstein cattle varying ages from 1 to 9 y and presenting the clinical signs of digital dermatitis, were used in this study. Group 1 (G1) received topical treatment with a 1% sodium hypochlorite footbath twice a day for 30 d and 4 treatments of parenteral oxytetracycline (10 mg/kg bodyweight, IM, q48h). Group 2 (G2) received only the topical treatment with 1% sodium hypochlorite, as described for G1. Group 3 (G3) received only with parenteral oxytetracycline, as described for G1. Group 4 (G4) was treated exclusively with a dicloro divynil pirrolidona, ortoiododimetil, para-nitofenil-fosforotioato in a vegetal tar-based ointment, immediately after the surgery. After 45 d, the recovery rates were as follows: G1, 86.67%; G2, 73.33%; G3, 56.67%; and G4, 50%. The surgical treatment of digital dermatitis with subsequent treatment with oxytetracycline systemically and 1% sodium hypochlorite topically was the most effective for the convalescence of cattle bearing wounds similar to digital dermatitis.


Subject(s)
Anti-Bacterial Agents/therapeutic use , Cattle Diseases/drug therapy , Disinfectants/therapeutic use , Foot Dermatoses/veterinary , Oxytetracycline/therapeutic use , Sodium Hypochlorite/therapeutic use , Administration, Topical , Animals , Cattle , Cattle Diseases/pathology , Cattle Diseases/surgery , Foot Dermatoses/drug therapy , Foot Dermatoses/pathology , Foot Dermatoses/surgery , Hoof and Claw/pathology , Infusions, Parenteral/veterinary , Severity of Illness Index , Treatment Outcome , Wound Healing/drug effects
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