Direct and indirect actions of morphine on medullary neurons that modulate nociception.

Heinricher MM, Morgan MM, Fields HL. Direct and indirect actions of morphine on medullary neurons that modulate nociception. Neuroscience. 1992; 48(3):533-43.

1992
http://profiles.ucsf.edu/profile/314864
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Heinricher MM, Morgan MM, Fields HL