1.
Nat Biotechnol
; 19(7): 668-72, 2001 Jul.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11433280
RESUMO
Field tests of corn co-expressing two new delta-endotoxins from Bacillus thuringiensis (Bt) have demonstrated protection from root damage by western corn rootworm (Diabrotica virgifera virgifera LeConte). The level of protection exceeds that provided by chemical insecticides. In the bacterium, these proteins form crystals during the sporulation phase of the growth cycle, are encoded by a single operon, and have molecular masses of 14 kDa and 44 kDa. Corn rootworm larvae fed on corn roots expressing the proteins showed histopathological symptoms in the midgut epithelium.
Assuntos
Bacillus thuringiensis/química , Proteínas de Bactérias/farmacologia , Toxinas Bacterianas , Endotoxinas/farmacologia , Controle de Insetos/métodos , Zea mays/metabolismo , Animais , Toxinas de Bacillus thuringiensis , Eletroforese em Gel de Poliacrilamida , Proteínas Hemolisinas , Imunidade Inata , Immunoblotting , Larva , Modelos Genéticos , Plantas Geneticamente Modificadas , Transformação Genética
2.
Cutis
; 51(6): 461-2, 1993 Jun.
Artigo
em Inglês
| MEDLINE
| ID: mdl-8519191
RESUMO
A case of angiosarcoma of the head and neck is presented. A review of the clinical and histopathologic features of this tumor is presented.