to test the usefulness of the apparatus , we have compared levels of guanosine 3',5'-monophosphate ( cgmp ) and adenosine 3',5'-monophosphate ( camp ) , measured in defined layers of suprafused rabbit retinas , to concentrations reported for retinal layers from eyes removed from light- and dark-adapted rabbits and quickly frozen .
C0035298
retinal
C0015392
eyes