part of part of has part has part has_part characteristic of has modifier abnormal circulating secretin level decreased circulating secretin level 2024-10-16T15:38:55Z reduced blood SCT amount less than the normal blood concentration of this polypeptide hormone, originally detected in the proximal small intestine but also expressed in the central nervous system, that regulates gastric acid secretion, water homeostasis throughout the body, and has a role in synaptic function reduced secretin blood concentration MP:0014566 abnormal decreased amount secretin blood