... proteinanti-HBsanti-preS45.0kDa35.0kDa25.0kDaComparison of the binding ability of preS and preS1 to anti-preS by ELISA testFigure 2Comparison of the binding ability of preS and preS1 to anti-preS by ELISA test. Different amounts of recombinant ... Gu1, Ming Luo1,3 and Xiaofeng Zheng*1,2Address: 1National Laboratory of Protein Engineering and Plant Genetic Engineering, Peking University, Beijing, 100871, China, 2Department of Biochemistry ... DNA-containing Dane HBV particles, detection of HBpreSAgpresent in serum of HBV patients may have a clinical value in management of HBV infection. In previous reports,radioimmunoassays using monoclonal...