Structural and ultrastructural alterations of epithelial cells of vas deferens caused by contrast medium

In a attempt to verify experimentally any possible alterations of epithelial cells of vas deferens caused by radiopaque substance, the right and left vasa deferential of 3 rats were injected respectively with saline solution (0.9 per cent NaCl) and Conray-400 (66.8 per cent sodium iodomethamate). 72 hours later, the animals were killed by cranial trauma and histolofical sections and electronmiucrographs of their vasa deferentia were observed. The histological sections of epithelial cells of left vasa deferentia showed a decrease in height and slight changes in stereocilia as compared with those of right contralateral vasa deferentia. Electronmicrographs displayed a reduction in number and size of stereocilia and alterations of many mitochondria in epithelial cells of left vasa deferentia

Contribuiçäo para o estudo do número das artérias renais no homem / Contribution for number study from renal artéries in man

Dissecando 30 cadáveres (60 rins), os autores encontraram 93 artérias, sendo 44 direitas e 49 esquerdas, todas elas orignando-se diretamente da aorta: únicas, 33 vezes (55% ); duplas, 21 (35,0% ); triplas, seis (10,0% ). estes dados, levaram os autores, a concluir que poderia ser considerado "normal" anatômico a ocorrência de uma (33 vezes em 60 rins, 55,0% ) ou duas (21 vezes, 35,0% ) artérias renais para um mesmo rim, independentemente das variáveis lado, sexo e grupo étnico. Mais de duas artérias de cada rim (seis vezes em 60 rins, 10,0% ) poderia, entäo, ser considerado como variaçäo