Chromogranin APancreatic HormonesAdrenal MedullaNeuroendocrine TumorsChromaffin GranulesNeurosecretory SystemsCarcinoid TumorSynaptophysinCarcinoma, NeuroendocrineChromaffin SystemEndocrine GlandsSecretogranin IISecretory VesiclesCatecholaminesEnterochromaffin-like CellsEnterochromaffin CellsPheochromocytomaCytoplasmic GranulesEndocrine Gland NeoplasmsCarboxypeptidase HImmunohistochemistryTumor Markers, BiologicalNerve Tissue ProteinsChromaffin CellsPeptide FragmentsCattleNeoplasms, Nerve TissueAdrenal Gland NeoplasmsMolecular Sequence DataNeuroendocrine CellsAmino Acid SequenceEnteroendocrine CellsProprotein Convertase 2Colitis, Lymphocytic