Nervous and mental diseases . I At-. Fig. 137.—Diagram of arterialmechanism producing infantile par-alysis (Williamson). Fig. 138.—Section of spinal cord in a case ofacute anterior poliomyelitis of the adult, a,a, Dilatedvessels surrounded by round cells (Williamson). that field supplied by the arteries which enter the cord along the anteriorroots, or both. Rarely it extends backward in the middle arterial fieldand invades the neck of the posterior horn, and usually it embraces theadjoining white matter of the cord to a varying extent. It is evidentthat the lesion is not strictly systematized,
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Nervous and mental diseases . I At-. Fig. 137.—Diagram of arterialmechanism producing infantile par-alysis (Williamson). Fig. 138.—Section of spinal cord in a case ofacute anterior poliomyelitis of the adult, a, a, Dilatedvessels surrounded by round cells (Williamson). that field supplied by the arteries which enter the cord along the anteriorroots, or both. Rarely it extends backward in the middle arterial fieldand invades the neck of the posterior horn, and usually it embraces theadjoining white matter of the cord to a varying extent. It is evidentthat the lesion is not strictly systematized, and it is equally evident that