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Figure 5 | BMC Infectious Diseases

Figure 5

From: Rapid and simultaneous detection of human hepatitis B virus and hepatitis C virus antibodies based on a protein chip assay using nano-gold immunological amplification and silver staining method

Figure 5

Detection limit of the protein chip assay. a: The concentration of anti-IgG was 3 μg/ml. b: The concentration of anti-IgG was 300 ng/ml. c: The concentration of anti-IgG was 30 ng/ml. d: The concentration of anti-IgG was 3 ng/ml. The first, second and third row denoted the negative control, detection and positive control spots respectively. The concentration of human IgG spotted on the slides was 100 μg/ml. The silver enhancement time was 10 minutes.

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