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Penile histology of a normal rat. The cross-section of rat penis was stained with Alexa-488-conjugated phalloidin, which detects smooth muscle (green stain), with Alexa-594-conjugated anti-RECA antibody, which detects endothelium (red stain), and with DAPI, which detects cell nuclei (blue stain). DAPI, 4’,6-diamidino-2-phenylindole; CC, corpus cavernosum; Pha, phalloidin; RECA, rat endothelial cell antigen.
