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Altered myelination of corpus callosum in PPARβ-null mice. Sagittal sections (10 μm) were cut and stained with LFB as described in Materials and Methods. Magnification, ×170. Arrows, regions of altered myelination. (A) Twelve-week-old females; (B) 36-week-old females; (C) 12-week-old males; (D) 36-week-old males.
