TFF2 and myalgic encephalomeyelitis/chronic fatigue syndrome: Of these antigens, eight antibody levels were shown to be significantly different (p < 0.05) between ME/CFS male and female subjects (Rubella-E2, Rotavirus-SA11, Rubella-C, B. burgdorferi-lysate, H. pylori-lysate, RRV-SP, C. Trachomatis, and EBV-gp125) (Figure 3A).