[Ultrastructural changes caused by yellow fever virus at the level of the kidneys in newborn mice].

The author is studying the ultrastructural modifications provoked by the yellow fever virus in the kidneys of baby mice. As a result of the study it has been found that minor changes start appearing as early as the first day and these lead finally to necrosis. The process consists of 5 phases which are the development of endoplasmatic reticulum, the envelopment of the mitochondria by the folds of endoplasmatic reticulum, mitochondrial autophagocytosis, the development of microvilli at the cell surface and the total necrosis of the renal cell.