3d image of testosterone skeletal formula

testosterone sex hormone anabolic steroid male hormonal therapy replacement function action endocrine endocrinology level prohormone analogue reproductive testes prostate secondary sexual characteristics muscle body hair osteoporosis androgen receptor hypogonadism anabolic androgenic androgen sex masculinizing myotrophic steroidal skeletal muscles masculine anabolism appetite puberty weight muscular strength masculinization irreversible performance-enhancing drug bodybuilding controlled substances black market counterfeit drugs 3d molecule