Neural Mechanisms That Underlie Angina-Induced Referred Pain in the Trigeminal Nerve Territory: A c-Fos Study in Rats
Figure 1
(a-A) Photomicrograph of c-Fos expression in the C2 spinal segment of a PPS-infused rat. The area bounded by the broken line is magnified 10 diameter (a-B). A black spot indicates a Fos-labeled cell (black arrow). (b) The number of Fos-labeled cells in uninfused control (Control, ), vehicle-infused (Vehicle, ), or PPS-infused (PPS, ) rats. , significantly different from the number of Fos-labeled cells in vehicle-infused rats.
