human_reference_atlas has characterizing marker set has marker component SYP CHGA GAST peptide hormone secreting cell gastrin secreting cell CT A peptide hormone secreting cell that secretes gastrin. gastrin cell Gastrin cell CL:0000509 pancreatic endocrine cell Homo sapiens sequence collection islet of Langerhans endocrine pancreas head of pancreas pancreas parenchyma of pancreas pancreatic lobule dorsal pancreas