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Ampakine induction of β-gal expression resulting from N-CAM promoter activity in heterozygous N-CAM knockout mice. β-gal expression was examined in sagittal sections from vehicle-treated control (A) and ampakine-treated (B) mice. Ampakine injection increased β-gal expression in the CA1 and CA2 of the hippocampus and in the deep layers of the cortex. (×20.)
