Thyroid hormone T4 is more than T3 but weak Thyroid follicular Thyroglobulin hydrolysis TT colloid 3 s more potent The thyroid gland is one of the largest endocrine organ and mainly consists of thyroid follicular, which is the main place to genera secrete thyroid hormoneThyroid hormone The thyroid gland is one of the largest endocrine organ and mainly consists of thyroid follicular , which is the main place to generate and secrete thyroid hormone. Thyroid follicular colloid Thyroglobulin T4 hydrolysis T3 T3 is more potent T4 is more than T3 but weak