Abstract
Fluorescence microscopic examination of five hamster superior cervical ganglia demonstrated that there were 223 ± 31 small, intensely fluorescent (SIF) cells per ganglion, equivalent to 140 ± 26 SIF cells per milligram tissue (wet weight). Incubation of hamster superior cervical ganglia (SCG) in vitro with 50 μm l-isoproterenol increased cyclic AMP concentrations to 622% of control values. Administration of 50 μm dopamine was without effect. Comparison with other species suggests that the superior cervical ganglia of three rodents—the hamster, guinea pig, and rat—differ significantly from those of other species in their morphologic and biochemical properties.
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