Figure 1

Frequency of HBcAg 18-27 epitope-specific CTLs. AHB indicated that the first HBcAg18-27 Pentamer test result after admission among the HLA-A0201-positive patients with acute hepatitis B; CHB indicated that the HBcAg18-27 Pentamer test result among the HLA-A0201-positive patients with chronic hepatitis B; Normal indicated that the HBcAg18-27 Pentamer test result among the HLA-A0201-positive subjects in the healthy control group. The differences among these groups were significant, p = 0.0 01.