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Representative confocal image of a 1 μm optical section showing a GnRH immunopositive neurone (green) in the preoptic area coexpressing immunofluorescence for KOR (red) in an OVX ewe. (A) GnRH alone, (B) KOR alone and (C) the merged image. White arrows indicate KOR immunoreactivity in cytoplasm surrounding nucleus of GnRH neurone. Scale bar = 20 μm.
