Figure 3From: Hepatitis B surface antigen variants in voluntary blood donors in Nanjing, ChinaMultiple sequence alignment with hierarchical clustering based on the protein sequences of the MHR of HBsAg from genotype C. Yellow shaded area indicated the MHR (aa99-aa169), Red shaded area indicated the alpha determinant region (aa124-aa147). Sample 573590 and 509344 was HBsAg negative in one of the kit from KHB Ltd or InTec Ltd.Back to article page