histamine , but not pentagastrin , is known to evoke gastric acid secretion in the nephrectomized rat , and histamine , but not pentagastrin , was found to lower the serum gastrin level and the gastric histidine decarboxylase activity , indicating that after nephrectomy gastrin was still secreted and that the secretion could be suppressed by increased acid output .
C0030859
pentagastrin
C0017151
gastrin