VTCN1 and infection: Experimentally, upon infection of the EBV-negative GC-type DLBCL cell line Pfeiffer (RRID: CVCL_3326) with the EBV strain B95.8, the authors observed upregulation of B7-H4, and the EBV-positive Pfeiffer cells undergo apoptosis when treated with anti- B7-H4 antibody [64].