title: The steric requirements for the metabolism of sterols by Tetrahymena pyriformis.
mesh_terms: D000818:Animals; D002775:Cholestadienols / Q000378:metabolism*; D002784:Cholesterol / Q000378:metabolism*; D003684:Dehydrocholesterols / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D013769:Tetrahymena pyriformis / Q000378:metabolism*
chemical_list: D002775:Cholestadienols; D003684:Dehydrocholesterols; D002784:Cholesterol