Endogenous opioids and the first sucklin
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Evgeniy S. Petrov; Elena I. Varlinskaya; William P. Smotherman
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Article
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1998
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John Wiley and Sons
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English
β 71 KB
π 2 views
## Endogenous activity at opioid receptors affects the appetitive behavior of Caesarean-delivered rat pups during presentation of a surrogate nipple that provides milk. Blockade of opioid receptors by peripheral injection of naloxone has no effect on responses evoked by the surrogate nipple. Similar