thyroxine or t4 hormone molecule and red blood cells

red circle flower petal orange organ leaf font pattern plant produce yellow pink food design line art thyroxine hormone molecule blood cells inside vessel rendering thyroid thyroxine t4 hormone autoimmune thyroiditis molecule immune red blood cells structure thyroxin endocrine chemical artery veins compound erythrocyte formula scattered isolated lymphoid parathyroid molecular throat 3d gland produces hyperthyroidism hypothyroidism atom rendering medical disease anatomy atomic stimulating binding carbon function health care cartilage medication chemistry metabolism science flow