Figure 3. Neutralizing antibodies in 39 patients chronically infected with hepatitis C virus, genotype 1.

Plasma samples from 39 patients, taken prior to treatment initiation with pegylated interferon-α and ribavirin, were tested against genotype 1a and 1b Core-NS2 recombinants in a two-fold dilution series starting from 1∶50. The graphs show the results for each virus. The NAb₅₀-titers are the highest dilution where the patient samples were able to neutralize 50% of the virus. Each bar shows the percentage of total patients from each group (i.e. SVR (n = 23) and non-SVR (n = 16)) in relation to their NAb₅₀-titer.