Oct. 26, 2022
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(A) Deposition of C3d at the nodes of Ranvier (arrows). (B) Macrophages overlying and inserting processes at the nodes of Ranvier (arrow). (C) Normal node of Ranvier (arrow). (D) Lengthening of the node (arrow) with overlying macrophages (arrowhead). (Contributed by Dr. Kazim Sheikh.)