[Opinions of Brazilian physicians on artificial fertilization from the ethics point of view]. / Opinião de médicos brasileiros sobre fecundação artificial do ponto de vista ético.

An ethical opinion survey was carried out among Brazilian physicians regarding artificial insemination. The results showed no statistical difference between opinions of physicians from the various regions of the country.

A critical appraisal of the value of vaginal acid phosphatase determination for the estimation of post-coital time.

A careful literature review of the use of vaginal fluid acid phosphatase levels as a means to estimate post-coital time disclosed several inconsistencies. In this study, acid phosphatase levels were determined in vaginal fluid samples obtained from 200 women whose post-coital time was known. No statistical significance (at 5% probability levels) was found when vaginal acid phosphatase levels were correlated with post-coital time.

Utilization of citogenetic technics in paternity investigation

Th joint analysis of several genetic markers in casesof paternity investigation renders possible a cumulative probability of 99.7% of change of esclusion of a flasely accused father. The role of heteromorphism of the Y chromosome size was appraised in this work, with more than one genetic marker, in 20 expertise examinations in paternity investigation, where the children were male. The results found with found with this method, in association with the research on erythrocytic and leucocytic antigens showed the exclusion of two falsely accused men. Cytogenetic analysis with Giemsa stain in combination with leukocyte (HLA system) and erithrocyte antigens investigation demonstrated the exclusion of two men falsely accused

Utilization of cytogenetic technics in paternity investigation.

The joint analysis of several genetic markers in cases of paternity investigation renders possible a cumulative probability of 99.7% of chance of exclusion of a falsely accused father. The role of heteromorphisms of the Y chromosome size was appraised in this work, with more than one genetic marker, in 20 expertise examinations in paternity investigation, where the children were male. The results found with this method, in association with the research on erythrocytic and leucocytic antigens showed the exclusion of two falsely accused men. Cytogenetics analysis with Giemsa stain in combination with leukocyte (HLA system) and erythrocyte antigens investigation demonstrated the exclusion of two men falsely accused.

[Human experimentation: ethics and law]. / A experimentação com seres humanos: ética e lei.

The author justifies his work showing the need for standardization in experiments involving human beings. Major international and Brazilian regulations to that effect are referred to in order to establish main items that should guide an experimentation with human beings under ethical requirements.

[Sex determination in blood stains through identification of Y-chromatin: medico-legal application]. / Diagnóstico do sexo em crostas de sangue através da identificação da cromatina Y: aplicação médico-legal.

The Y-chromatin is visualized in human interphase nuclei, corresponding to the distal portion of the Y-chromosome, which shows marked fluorescence after staining with quinacrine. This report describes the results of sex determination on blood smears fixed in methanol and blood stains left at room temperature for 13 weeks (1st report), and for 10 months (2nd report). Blind trials showed that a reliable sex determination of blood stains on glass left for at least six months is possible. The application of this method in forensic practice is discussed.

[Abortion liberation: the opinion of medical and law students, São Paulo, Brazil]. / Liberação do aborto: opinião de estudantes de Medicina e de Direito, São Paulo, Brasil.

The results of a survey carried out with the participation of 155 medical and 141 law students are given. Of the total of 296 students, 142 agreed with the freeing of abortion from legal restrictions, 144 agreed with such restrictions and 6 gave no opinion. Of the 144, 12 rejected abortion under any circumstances. The differences were analysed by sex and school. The statistical analysis did not show significance at the level of 5%.

Estudo medico-social dos fatores contribuintes para os acidentes das aeronaves executivas convencionais ocorridas entre 1971 e 1975. III - Condicoes fisicas, apos o acidente, dos ocupantes das aeronaves e os acidentes fatais. / Medical and social study of the contributing factors to the accidents with conventional executive aircrafts ocurred from 1971 to 1975. III. Physical conditions of the aircraft occupants after the accident and the fatal accidents

Terminando uma serie de artigos em que sao publicados dados referentes a investigacao realizada sobre acidentes ocorridos com aeronaves executivas convencionais entre 1971 a 1975 na area do IV Comando Aereo Regional foram, nesta oportunidade, analizadas as condicoes fisicas, apos o acidente, dos ocupantes das aeronaves e os acidentes que produziram uma ou mais fatalidades. Foi verificado que qualquer ocupante de aeronave, independente de sua condicao de piloto, tem a mesma probabilidade de vir a ser lesado apos sofrer o acidente: que 79,3% das pessoas que estavam a bordo sairam ilesas apos o acidente e que 9,5% vieram a falecer. Finalmente,que o fator operacional devido as condicoes meteorologicas que produziram fatalidade e que estes acidentes corresponderam a 11,5% do total de acidentes investigados