Fig. 3. Detailed Y5 mRNA localization in rat brain. Schematic representation of intensity and localization of Y5 mRNA expression determined by in situ hybridization in six representative coronal sections through the rat brain. Coronal sections corresponding to bregma 1.00 mm, −0.92 mm, −3.14 mm, −4.52 mm, −7.8 mm, and −9.80 mm (panels A–F, respectively) were examined for the pattern and intensity of in situhybridization signal, and the results are indicated inred. Hybridization intensity was judged by the density of positive neuronal cell bodies as well as intensity of reaction product and was graded high, moderate, or low. This is indicated by the size and density of dots shown in the legend. This schematic was generated using Paxinos and Watson (1997). AHiPM, Amygdalohippocampal area, posteromedial part; APir, amygdalopiriform transition zone; Arc, arcuate nucleus;ArcMP, arcuate nucleus, medial posterior part;B, basal nucleus of Meynert; BL, basolateral amygdaloid nucleus; BM, basomedial amygdaloid nucleus; Cereb, cerebellum;Cg, cingulate cortex; CPu, caudate putamen; CxA, cortex-amygdala transition zone;DG, dentate gyrus; DMH, dorsomedial hypothalamic nucleus; Hb, habenular nucleus;ICj, islands of Calleja; Ifp, longitudinal fascic pons; IMD, intermediodorsal thalamic nucleus; LA, lateroanterior hypothalamic nucleus;LaV, lateral amgydaloid nucleus, ventral part;LDVL, laterodorsal thalamic nucleus, ventrolateral part;LEnt, lateral entorhinal cortex; LM, lateral mammillary nucleus; m5, motor root of the trigeminal nerve; ME, median eminence;MePV, medial amygdaloid nucleus, posteroventral part;MM, mammillary nucleus; Mo5, motor trigeminal nucleus; MPO, medial preoptic nucleus; MTu, medial tuberal nucleus;MVPO, medioventral periolivary nucleus;PDTg, posterodorsal tegmental nucleus;PMCo, posteromedial cortical amygdaloid nucleus;PMnR, paramedian raphe nucleus; Pn, pontine nucleus; PnC, pontine reticular nucleus, caudal part; PnO, pontine reticular nucleus;PnV, pontine reticular nucleus, ventral part;Pr5VL, principal sensory trigeminal nucleus;PVP, paraventricular thalamic nucleus, posterior part;py, pyramidal tract; Re, reuniens thalamic nucleus; Rh, rhomboid thalamic nucleus;rs, rubrospinal tract; RtTG, reticulotegmental nucleus of the pons; s5, sensory root of the trigeminal nerve; SCh, suprachiasmatic nucleus;SNR, substantia nigra; SO, supraoptic nucleus; SOR, supraoptic nucleus, retrochiasmatic part;SPO, superior paraolivary nucleus; TC, tuber cinereum; Tu, olfactory tubercle;Tz, trapezoid body; VCA, ventral cochlear nucleus; VLL, ventral nucleus of the lateral lemniscus;VMH, ventromedial hypothalamic nucleus;VP, ventral pallidum; VPL, ventral posterolateral thalamic nucleus; VTM, ventral tuberomammillary nucleus. All other abbreviations are as indicated in previous figures.