51�Թ�

Zika-infected mice experience damage to the tubules that are lined with Sertoli cells, called seminiferous tubules.

In Larix the carpellary scale may become leafy, and the seminiferous scale may disappear.

Sperm expelled from the epididymides in autumn matings are seemingly replaced by others from the seminiferous tubules; the epididymides become much smaller when their supply of sperm is nearly exhausted after spring mating.

The spermatozoa are formed in the walls of the convoluted seminiferous tubules.

It is important to draw attention to some structural features exhibited by certain cone-scales, in which there is no external sign indicative of the presence of a carpellary and a seminiferous scale.