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Immunohistochemical (IHC) staining for RABV antigen in fixed brain tissue from the Dominican Republic (DOM) patient (A18-2173). (A) RABV antigen detection at 400× magnification. (B) Neuronal cytoplasmic inclusions at 630× magnification. (C) Negative control brain at 400× magnification. Streptavidin–biotin complex staining method using rabbit antibodies against RABV nucleoprotein, signal development with AEC chromogen (magna red), and Gills hematoxylin counterstain.
