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Photomicrographs illustrating the effects of intraoral sucrose and suckling on CFA-induced Fos-LI in the cervical (C7, A and B) and lumbar (L4, C and D) spinal cord of 10-day-old rats. The spinal dorsal horn ipsilateral to inflammation is shown with dorsum on top. (A and C) CFA-induced Fos-LI without intraoral sucrose and suckling. (B and D) CFA-induced Fos-LI with intraoral sucrose and suckling. (Bar = 0.1 mm.)
