title: Histochemical observations on the taste buds of the marmosets (Callithrix jacchus and Callithrix penicillata).
abstract: The epithelial cells in the taste buds of C. jacchus and C.  penicillata show a moderate amount of ribonucleic acid an a concentration of a PAS-positive diastase-resistant material at their apical part. These cells are devoid of UDPG-GT, phosphorylases, G-6-PA, alanyl aminopeptidase, leucine aminopeptidase, cholinesterase and MAO; they present a weak reaction of F-1, 6-P Ald, LDH, SDH, MDH, cytochrome oxidase, beta-OHBDH, nonspecific esterase and acid phosphatase and a stronger reaction to ADH, NADPH2-TR, ATPases, alpha-GPDH, alkaline  phosphatase, 5-nucleotidase and GDH. Although some enzymes (alkaline phosphatase, 5-nucleotidase and ATPases) have an almost uniform reactivity by the several taste buds, the other ones react with a lesser intensity in the smaller uniform reactivity by the several taste buds, the other ones react with a lesser intensity in the smaller taste buds of the fungiform papillae. As a rule the apical part of the cells shows a stronger enzymatic reactivity. The taste buds of the marmosets are penetrated by acetylcholinesterase positive nerve fibers whereas the autonomic ganglia in the connective tissue contain both-acetyl and butyrylcholinesterase.
mesh_terms: D000251:Adenosine Triphosphatases / Q000032:analysis; D000469:Alkaline Phosphatase / Q000032:analysis; D000818:Animals; D002143:Callitrichinae / Q000033:anatomy & histology*; D004848:Epithelium / Q000032:analysis; D005260:Female; D000882:Haplorhini; D006651:Histocytochemistry; D008297:Male; D009708:Nucleotidases / Q000032:analysis; D010088:Oxidoreductases / Q000032:analysis; D012313:RNA / Q000032:analysis; D013650:Taste Buds / Q000032:analysis* / Q000201:enzymology
chemical_list: D012313:RNA; D010088:Oxidoreductases; D009708:Nucleotidases; D000469:Alkaline Phosphatase; D000251:Adenosine Triphosphatases