1. Methionine enkephalin and morphine accelerated the firing frequency of the cells in the right parietal (RPa2) and visceral (V) ganglia of Helix pomatia L. The effect of both agents was blocked by naloxone. 2. Naloxone blocked the inhibitory effect caused by dopamine application to the RPa2 cell. 3. Dopamine had a stimulatory effect on the neurosecretory cell (NS) which was not altered by naloxone pretreatments. 4. Naloxone specificity may be extended to a type of dopamine receptor. 5. In Helix pomatia L. an opiate receptor with similar pharmacological properties to that reported in mammals exists.
|Number of pages||6|
|Journal||Comparative Biochemistry and Physiology. Part C, Comparative|
|Publication status||Published - 1980|
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