Human theca arises from ovarian stroma and is comprised of three discrete subtypes oleh Nicole Lustgarten Guahmich, Limor Man, Jerry Wang, Laury Arazi, Eleni Kallinos, Ariana Topper-Kroog, Gabriel Grullon, Kimberly Zhang, Joshua Stewart, Nina Schatz-Siemers, Sam H. Jones, Richard Bodine, Nikica Zaninovic, Glenn Schattman, Zev Rosenwaks, Daylon James