title: SIF cells as APUD cells: a possible endocrine role.
mesh_terms: D000818:Animals; D003653:Decarboxylation; D004702:Endocrine Glands / Q000502:physiology; D005724:Ganglia / Q000166:cytology* / Q000378:metabolism / Q000502:physiology; D005755:Gastrins / Q000502:physiology; D006728:Hormones / Q000378:metabolism*; D009424:Nervous System Physiological Phenomena; D010455:Peptides / Q000378:metabolism* / Q000502:physiology; D013004:Somatostatin / Q000502:physiology; D013373:Substance P / Q000502:physiology; D014660:Vasoactive Intestinal Peptide / Q000502:physiology
chemical_list: D005755:Gastrins; D006728:Hormones; D010455:Peptides; D013373:Substance P; D014660:Vasoactive Intestinal Peptide; D013004:Somatostatin