During the summer of 1930, a very severe epidemic of cholera broke out in several villages of the Faridpur district, accounting for a total of 3,445 cases amongst a population of only 256,249; of the latter, 52,295 were inoculated at the beginning of the epidemic with one cubic centimetre of cholera vaccine prepared in the Bengal Vaccine Laboratory with local strains. As in some instances a few...

The elemental composition of strawberry plants (Fragaria ananassa cv. Macarena) inoculated with the plant growth-promoting bacterium Azospirillum brasilense REC3, and non-inoculated controls, was studied using scanning electron microscopy (SEM) and energy dispersive X-ray (EDS) analysis. This allowed simultaneous semi-quantification of different elements in a small, solid sample. Plants were in...

Congenital toxoplasmosis was evaluated in Wistar and Holtzman rats using two strains of Toxoplasma gondii isolated in Brazil. Pregnant rats were inoculated by subcutaneous or intraperitoneal routes with 10(6) or 8 x 10(6) tachyzoites of N strain (virulent for mice) and by subcutaneous or oral routes with 10(2) or 1.2 x 10(3) cysts of P strain (avirulent for mice). The tissues of rat pups born f...