passages.id: split_1_test_279_passage
passages.type: progene_text
passages.text: To clarify the physiological significance of non - adrenergic non - cholinergic ( NANC ) excitatory and inhibitory nerves in the IAS of HD , we investigated the enteric nerve responses on lesional and normal IAS in patients with HD and in patients who had undergone rectal amputation for low rectal cancer .