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Fig. 4. Autoradiographs showing localization of neuropeptide and receptor gene expression in coronal sections of male bank vole brain, following 12-week exposure to long-day photoperiod (LD). NPY, neuropeptide Y; AGRP, agouti-related protein; POMC, pro-opiomelanocortin; CART, cocaine- and amphetamine-regulated transcript; CRF, corticotrophin-releasing factor; MC3-R and MC4-R, melanocortin-3 and -4 receptors; ARC, arcuate nucleus; VMN, ventromedial nucleus; PVN, paraventricular nucleus.