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Cover picture: Internalization of substance P
receptors by spinal cord neurons after an acute noxious thermal
stimulus. A confocal image of substance P receptors
(yellow), substance P (red)
immunoreactivity, and cell nuclei (blue) in lamina I of rat
lumbar spinal cord 8 min after a 30 sec thermal (
20°C)
stimulus. The noxious thermal stimulus induces a release of substance P from the primary afferent neurons that terminate in lamina I, which in
turn induces the internalization of substance P receptors that are
expressed by the postsynaptic spinal cord neurons. For details, see the
article by Allen et al. (pp. 5921-5927).
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