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Examples of pp38 immunoreactivity in subnucleus caudalis. Photomicrographs showing examples of ipsilateral pp38 labeling in subnucleus caudalis (1800 μm caudal to obex). (A) non-stimulated, non-inflamed; (B) non-stimulated, inflamed; (C) stimulated (60 min), non-inflamed; (D) stimulated (60 min), inflamed. Scale bar = 100 μm.
