ICAM1 and infection: Positive vascular ICAM-1 immunostaining at levels comparable to those observed in ODC-OVA mice was also observed in VE-Cadherin-GFP control mice (Fig. 6F, G), suggesting that even at day 7 post LCMV-OVA infection and complete clearance of the LCMV virus the BBB still retains a mild inflammatory phenotype.