title: Studies on the relationship between FSH and germ cells: evidence for selective suppression of FSH by testicular extracts.
abstract: The evidence supporting the relationship between the seminiferous epithelium and circulating FSH levels has been reviewed and provides support for the concept that the testis produces a factor capable of specifically controlling FSH concentrations. Detailed quantitative histological studies of the seminiferous epithelium have demonstrated a highly significant inverse relationship between the number of spermatogonia per tubule cross-section and serum FSH levels in men with testicular disorders.
mesh_terms: D000818:Animals; D002417:Cattle; D006801:Humans; D007986:Luteinizing Hormone / Q000378:metabolism; D008297:Male; D013739:Testosterone / Q000502:physiology; D013972:Thyrotropin / Q000378:metabolism*
chemical_list: D013739:Testosterone; D007986:Luteinizing Hormone; D013972:Thyrotropin