Immunophenotyping of the neuroinflammatory response to the viral infection was carried out using IHC against GFAP (astroglial cells) and IBA1 (microglial cells; Figs. 19, , , –23), CD3 (T-lymphocytes), and CD20 (B-lymphocytes; Fig. 24a and b). The gene discussed is GFAP; the disease is viral infectious disease.