Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MAUDUIT C,Effect of activin A on dehydroepiandrosterone and testosterone secretion by primary immature porcine Leydig cells,Biol Reprod,,,1991,45,,101-109,https://cir.nii.ac.jp/crid/1570572701283280512,