title: Preface.
authors.forename: Rafael
authors.initials: R
authors.lastname: Jiménez
mesh_terms: D000818:Animals; D005260:Female; D006801:Humans; D008297:Male; D010053:Ovary / Q000254:growth & development; D019849:Sex Determination Processes; D012733:Sex Differentiation / Q000235:genetics; D013737:Testis / Q000254:growth & development