Brain abscess from oral microbiota approached by metagenomic next-generation sequencing: A case report and review of literature

Figure 2 Histopathological analysis and immunohistochemical examination of the extracted specimen. A: Hematoxylin and eosin staining (× 40); B: Immunohistochemical staining for showing CD3 positive staining (× 200); C: CD4 positive staining (× 100); D: CD20 positive staining (× 100); E: CD56 positive staining (× 400); F: CD68 positive staining (× 400); G: CD138 positive staining (× 400); H: MPO positive staining (× 400); I: PAS negative staining (× 100).