Adenosine 3',5'-Monophosphate: Regional Differences in Chick Embryos at the Head Process Stage

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Science  10 Nov 1972:
Vol. 178, Issue 4061, pp. 628-630
DOI: 10.1126/science.178.4061.628


The concentrations of adenosine 3',5'-monophosphate and adenosine triphosphate and the activity of phosphodiesterase were determined in different regions of chick embryos at the head process stage. Adenosine 3',5'-monophosphate, adenosine triphosphate, and phosphodiesterase were estimated to be higher in the mesoderm-forming portions of the hypoblast than in portions that form neural structures from Hensen's node or the epiblast.