Figure 1From: Rate of decline of antibody titers to pandemic influenza A (H1N1-2009) by hemagglutination inhibition and virus microneutralization assays in a cohort of seroconverting adults in Singapore Scatterplot of titres from HI and MN assays. Random jitter was added to separate overlapping data points, and different coloured samples denote data from sample A (baseline) to sample C. The straight line in black is for the best fitting regression model, which has an R-squared of 0.51 (p<0.001).Back to article page