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Figure 3 | BMC Infectious Diseases

Figure 3

From: Escherichia coli–expressed near full length HIV-1 envelope glycoprotein is a highly sensitive and specific diagnostic antigen

Figure 3

Analysis of an in-house sera panel using the one- and two-step double antigen sandwich TRF assays. A panel of 59 in-house assembled patient sera pre-screened for HIV-sero-status using a commercial kit (Vidas HIV Duo Quick kit, bioMérieux SA, France), were tested using the one-step (panel A) and two-step (panel B) assays. The empty and filled circles represent sera that were negative and positive, respectively, for anti-HIV-1 antibodies, as determined by the two assays.

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