Figure 2From: Occurrence of HSV-1-induced pneumonitis in patients under standard immunosuppressive therapy for rheumatic, vasculitic, and connective tissue disease Immunohistochemical staining for HSV-1 in a fixated cyotspun obtained from BAL from Case 2 identifying a positive cell (dark brown colour). Bottom and left: alveolar macrophages and lymphocytes with degenerative changes.Back to article page