Fig. 1From: The association between sPD-1 levels versus liver biochemistry and viral markers in chronic hepatitis B patients: a comparative study of different sPD-1 assaysCorrelations between serum sPD-1 levels measured by MyBioSource and R&D kits. Samples are from A all centers (N = 254); B REVEAL cohort (N = 135); C Chang Gung Memorial Hospital Kaohsiung Branch (CGMH-KB; N = 72) and D Chang Gung Memorial Hospital Linkou Branch (CGMH-LB; N = 47)Back to article page