a strong trendp = 0.06
However, the naïve IgM NAb levels may reflect the subsequent SpAb production post-vaccination, as there is a strong trend in the associations between KLH-binding IgM NAbs to both anti-GST SpAb IgG ( Figure 5 A: r = 0.80, p = 0.06) and IgM ( Figure 5 B: r = 0.72, p = 0.11).