Zwain, I H Rat seminiferous tubular culture medium contains a biological factor that inhibits Leydig cell steroidogenesis: its purification and mechanism of action. [electronic resource] - Molecular and cellular endocrinology Sep 1994 - 213-27 p. digital Publication Type: Journal Article ISSN: 0303-7207 Standard No.: 10.1016/0303-7207(94)90124-4 doi Subjects--Topical Terms: Adenylate Cyclase ToxinAnimalsCells, CulturedCholera Toxin--pharmacologyChorionic Gonadotropin--pharmacologyChromatography, High Pressure LiquidColforsin--pharmacologyCulture Media, ConditionedCyclic AMP--biosynthesisInterleukin-1--pharmacologyKineticsLeydig Cells--drug effectsMaleProteins--isolation & purificationRatsRats, Sprague-DawleySeminiferous Tubules--metabolismTestosterone--biosynthesisTransforming Growth Factor beta--pharmacologyVirulence Factors, Bordetella--pharmacology