Scientists have discovered a tiny group of cells that is critical to repairing damage to the testes. Blocking the cells prevents repair to tissue involved in producing healthy sperm, the research has ...

Histological examination of the testis in the normal group reveals various types of spermatogenic cells within the seminiferous tubules. The different cell types include the following: Sg: ...

Washington — A man who battled childhood cancer has received the first known transplant of sperm-producing stem cells, in a study aimed at restoring the fertility of cancer’s youngest survivors.