ORF48 encodes an alkaline nuclease (J Virol. 87: 11936-11938). ORF48 protein is homologous to herpes simplex type 1 (HSV-1) UL12, human cytomegalovirus (hCMV) UL98 and Epstein Barr virus (EBV) BGLF5. Our anti-VZV48 antibody VZ 48.18 works in ELISA (on immunogen), IF (on VZV infected cells) and each LOT is validated for Western blot of VZV infected cell lysates, where it gives a pattern as described in J Virol. 2013 Jun;87(12):6943-54).