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nNOSβ mRNA localizations in wild-type and nNOSΔ/Δ (KO) mice. Radioactive oligonucleotide in situ hybridization employed the nNOSβ-specific probe. Arrowheads indicate selected cells showing black radioactive emulsion grains. Sections are counterstained with cresyl violet. Abbreviations are as in Fig. 5 legend. (×400.)
