in the larval brain and ring gland cyclic amp is at its lowest at parturition but rises sharply , reaching a peak 1.5 hr later at the time of pupariation . though cyclic amp levels in the head and thorax are consistently 10-60 times greater than levels of cyclic gmp , both the female abdomen and larva contain high concentrations of cyclic gmp with a ratio of cyclic amp : cyclic gmp approaching 1:1 .
C0006104
brain
C0086045
concentrations