Cold sore triggers vary from person to person, but HSV is an opportunistic infection. That means it rears its ugly head when, for whatever reason, your immune system is too weak to Herpes simplex virus 2 glycoprotein G (gG) Strain T_99 59340, Recombinant The Native Antigen Company Glutathione and Nitric Oxide: Key Team Players in Use and Disuse of Skeletal Muscle ZDHHC14 and APT2 regulate the palmitoylation of HSV 2 gB ScienceDirect The Role of Glutathione in Viral Diseases of the Central Nervous System IntechOpen