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ACE2 co-expression with SARS-CoV-2 S antigen at the choroid plexus. FFPE brain section showing specifically the choroid plexus analyzed via immunostaining (IHC and dual-labeling IF) for hACE2 and SARS-2 S. (A) SARS-2 S IHC (brown); (B) hACE2 IF (ACE2+, green); (C) SARS-2 S IF (SARS-2 S+, red); (D) Merge of hACE2 and SARS-2 IF (ACE2+ and SARS-2 S+). Magnification 10X. IHC hematoxylin counterstaining (blue).
