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It is suggested that micrograph of section of spinal cord of 13-days-old embryo in control group(A). W.M: White matter, G.M: Gray matter, Vent: Ventricular layer, E.C: and section of spinal cord of 13-days-old embryo in experimental group(B). W.M: White matter, G.M: Gray matter, Vent: Ventricular layer, E.C: Ependimal channel (×100).
