title: Circadian rhythmicity in the 'basal' pancreatic secretion of the domestic fowl.
abstract: The interdigestive pancreatic exocrine secretion of the domestic fowl has been studied following the cosine-vector analysis. For the flow of pancreatic juice the crest phase was at 1040 and the sample amplitude was 2.26 microliter/min. For the amylase output the crest phase was at 1128 and the sample amplitude was 0.297 U.A.A./min. Both parameters are characterized by a phase-and frequency-synchronized rhythm whose period must be close to 24 hr.
mesh_terms: D000681:Amylases / Q000032:analysis; D000818:Animals; D002645:Chickens / Q000502:physiology*; D002940:Circadian Rhythm; D005260:Female; D010179:Pancreas / Q000378:metabolism*; D010189:Pancreatic Juice / Q000032:analysis / Q000378:metabolism*; D012636:Secretory Rate
chemical_list: D000681:Amylases