title: Mechanisms of gonadal differentiation in vertebrates. Preface and introduction.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005260:Female; D006066:Gonads / Q000196:embryology*; D006801:Humans; D008297:Male; D009229:Mythology; D012733:Sex Differentiation / Q000502:physiology*; D014714:Vertebrates / Q000196:embryology / Q000502:physiology*