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PVN OX1R is primarily expressed in neurons in the SD rats. Representative images showing immunoreactivity of OX1R (green), neuronal nuclei NeuN [red (A)], microglial marker Iba1 [red (B)], astrocyte marker GFAP [red (C)], and merged images in the PVN of SD rat. The area labeled in the dashed rectangle in the upper panel was magnified and showed in the lower panel. The brain coronal sections were taken from 1.8 mm caudal from the bregma. 3V, the third ventricle.
