title: Activin: an endocrine or paracrine agent?
authors.affiliation: Reproductive Endocrine Sciences Center and National Center for Infertility Research, Department of Medicine, Massachusetts General Hospital, Boston 02114, USA.
authors.forename: C K
authors.initials: CK
authors.lastname: Welt
authors.forename: W F
authors.initials: WF
authors.lastname: Crowley
mesh_terms: D028341:Activins; D000818:Animals; D004703:Endocrine System / Q000378:metabolism / Q000502:physiology*; D006133:Growth Substances / Q000096:biosynthesis / Q000502:physiology*; D006801:Humans; D007265:Inhibins / Q000096:biosynthesis / Q000502:physiology*; D019899:Paracrine Communication / Q000502:physiology*
chemical_list: D006133:Growth Substances; D028341:Activins; D007265:Inhibins