Abstract Background To study the problem of male sterility of cattle-yak and improve the yak crossbreeding. this study obtained the testicular Sertoli cells of yak and cattle-yak and compared the differences in transcriptome levels between the two bovine species. The testicular tissues of 3 healthy male cattle-yaks and 3 F1 generation male yaks were collected at the age of 24 months. ... https://unitedssports.shop/product-category/hockey-sticks-youth/