Thyroid hormones. Thyroxine or T4, Triiodothyronine or T3, and Calcitonin. Close-up of a Thyroid gland. Human Endocrine system. Isometric flat illustr

anatomy, autoimmune, body, calcitonin, cancer, carcinoma, conversion, deficiency, diagnosis, disorder, endocrine, endocrinologist, endocrinology, examination, flat, function, gland, goiter, graves disease, hashimoto thyroiditis, health, healthcare, healthy, hormonal, hormones, hyperthyroidism, hypothyroidism, illness, illustration, inflammation, iodine, isometric, medicine, metabolic, metabolism, pain, patient, peroxidase, poster vector vectors, regulation, replacement, science, surgery, synthesis, t3, t4, therapy, thyroglobulin, thyroid, thyroxine, treatment, triiodothyronine, tumor, vector,