spermatocytogenesis

例句：

1. 1. The study of spermatogenesis has led to new insights into the development of male reproductive organs.
   对精子发生的研究已经揭示了男性生殖器官发展的新见解。
2. 2. Spermatogenesis is a complex process that involves the formation and maturation of spermatozoa.
   精子发生是一个复杂的过程，涉及精子原细胞的形成和成熟。
3. 3.During spermatogenesis, the testes produce spermatogonia, which then differentiate into spermatozoa.
   在精子发生过程中，睾丸产生精原细胞，这些细胞随后分化成精子细胞。