Figure 4: Double immunofluorescent micrographs of DRG neurons for control and 3-, 7-, 14-, and 21-day groups (n = 10). From left to right: TRPA1 is red, CGRP is green, nuclei (DAPI) is blue, and the merged is a combined image of the three. The yellow color indicates the coexpression of TRPA1 and CGRP on the same cells. Scale bars = 50 μm.