Has bactericidal activity. Expressed in the liver, kidney, gall bladder, testis, ovary and male and femae reproductive tracts. Expressed in the ovarian stroma and the theca and granulosa layers of the ovarian follicle. Detected in the theca and granulosa layers of the ovarian follicle in the white follicle (WF), F1, F3, F5, and postovulatory follicle stages. Induced in the theca layer of the F3 stage ovarian follicle by intravenous injection of LPS. Expression in the granulosa layer of the ovarian follicle is not affected by intravenous injection of LPS. Belongs to the beta-defensin family.