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Photomicrographs of VIP immunostaining in wild-type (A, C, E) and mutant (B, D, F) coronal sections containing rostral (A, B), middle (C, D), and caudal (E, F) SCN regions. Note the higher density of stained cells in the mutant middle SCN region. 3V, Third ventricle;OC, optic chiasm.
