PTH and ileal neuroendocrine tumor G1: Other CS cell lines include COLO 320DM cells, derived from a human colon carcinoid secreting 5-HT, parathyroid hormone (PTH), adrenocorticotropic hormone (ACTH), norepinephrine and epinephrine [47], and GOT1 cells, established from a liver metastasis of a human ileal carcinoid tumor, expressing all recognized somatostatin receptors, the amine transporters VMAT1 and ATP-dependent vesicular monoamine transporter 2 (VMAT2) [49].