Release of substance P from the spinal dorsal horn is enhanced in polyarthritic rats.
Oku R, Satoh M, Takagi H.
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Release of immunoreactive substance P in the spinal cord during development of acute arthritis in the knee joint of the cat: a study with antibody microprobes.
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Brain Res. 1990 Oct 8;529(1-2):214-23. doi: 10.1016/0006-8993(90)90830-5.