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Photomicrograph of agouti related protein (AgRP) fibers in the hypothalamus. No AgRP is present in the rostral subZI (A) but is present in caudal subzi (B). α-MSH fibers are present in rostral (C) and caudal (D) subZI. AHP, anterior hypothalamic nucleus, posterior part; AHC, anterior hypothalamic nucleus, central part; 3V, third ventricle.
