Abstract
Intracellular recordings were performed in vitro from dorsal root ganglion cell bodies isolated from adult rats. A- and C-type cells were distinguished according to the conduction velocity at their axons. Pressure application of substance P from extracellular electrodes caused a depolarization of some cells. This depolarization was accompanied by changes in membrane resistance. These results suggest that the cell bodies of spinal ganglion cells of adult animals may possess substance P receptors.
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