4-androstenediol http://purl.bioontology.org/ontology/MESH/D015114 http://purl.bioontology.org/ontology/SNOMEDCT/103051007 http://purl.obolibrary.org/obo/CHEBI_34386 http://purl.obolibrary.org/obo/NCIT_C95979 https://en.wikipedia.org/wiki/4-Androstenediol A direct metabolite of dehydroepiandrosterone (DHEA) and a precursor for testosterone with immunostimulatory activity and minimal androgenic activity. Androstenediol stimulates the differentiation of hematopoietic precursor cells into leukocytes and platelets, which can counteract the immunotoxicity of radiation exposure. An intermediate in testosterone biosynthesis, found in the testis or the adrenal glands. Androstenediol, derived from dehydroepiandrosterone by the reduction of the 17-keto group (17-hydroxysteroid dehydrogenases), is converted to testosterone by the oxidation of the 3-beta hydroxyl group to a 3-keto group (3-hydroxysteroid dehydrogenases). androstenediol 3-hydroxy steroid