Figure 1.

(A) Line of fit for measles binding antibody titers, reported as the highest dilution of test serum showing antibodies against measles, with 95% CI (shaded region). A longitudinal downward trend is observed for all doses. (B) Box plots of post-vaccination antibody dilution measurements (6 and 12 mo after vaccination) suggest no difference between groups in the binding antibody titers at 6 mo after vaccination. However, animals in the quarter-dose group showed slightly lower binding antibody titer (marginally significant, P = 0.05) at 12 mo after vaccination. Red lines illustrate the medians, whiskers depict the minimal and maximal values, and the bands are the 1st and 2nd quartiles. *, P = 0.05.