Fig. 2.
Effect of adrenergic effector NE (10 μmol/L) and adenosine A2 receptor agonist CPCA (10 μmol/L) on cAMP production of embryonic RBC harvested from 3- to 17-day-old chick embryos; data for day 11 to 17 are taken from Dragon et al.3 Results are the mean values and SD of at least 5 determinations.