. "RTT" . "Guanidines" . "Biguanides" . "Endocrine diseases" . "Thyroid cancer" . "Thyroid disease" . "Metformin Inhibits Proliferation of Human Thyroid Cancer TPC-1 Cells by Decreasing LRP2 to Suppress the JNK Pathway" . "Drugs with unknown mechanisms of action" . "World Health Organization essential medicines" . "Merck brands" . "EC 2.7.11" .