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Light microscopic examination of the cerebral cortex of the control group. Gly: Glia cells; arrowheads: Neuron soma; arrows: Capillaries; nrpl: Neuropil; (H and E, ×20). Semi-thin section arrowhead: Capillaries; arrows: Neuron soma with clear nucleus and nucleolus, gly: Neuroglia; ×40, Toluidine blue staining
