Lung: lymphocytic interstitial pneumonitis (LIP)

Lymphocytic interstitial pneumonitis (LIP) This is a high power view of in situ hybridization for Epstein-Barr virus (EBV) (human herpesvirus 4 [HHV-4]) in LIP. It shows numerous dark deposits of reaction products following an in situ hybridization reaction to detect Epstein-Barr encoded RNA (EBER) in the lung.