Arguing against this possibility is the finding that both Stra8-icre;Dicerlox/lox and Stra8-icre;Droshalox/lox male mice are infertile with oligozoospermia or azoospermia due to constant depletion of pachytene spermatocytes and spermatids. This evidence concerns the gene STRA8 and Azoospermia.