title: Serum FSH levels in asymptomatic, azoospermic men.
mesh_terms: D001706:Biopsy; D005640:Follicle Stimulating Hormone / Q000097:blood*; D006801:Humans; D008297:Male; D009845:Oligospermia / Q000097:blood*; D013737:Testis / Q000473:pathology
chemical_list: D005640:Follicle Stimulating Hormone