triiodothyronine t3 molecule

vector triiodothyronine thyroid therapy test technology system symbol substance structure structural steroid skeletal sign screening scientific science research replacement organic molecule molecular model medicine medical logo laboratory illness icon hypothyroidism hyperthyroidism human hormones hormone hormonal healthcare health goiter gland formula examination exam endocrinology endocrinologist endocrine education disorder disease diagnosis concept compound chemistry chemical checkup care blood biology biochemistry ballandstick atom