FIG 1.

Optical densities obtained for samples from free-ranging, captive nonvaccinated, and captive vaccinated cheetahs in antibody tests for FeLV p45. Captive vaccinated cheetahs had higher OD levels than free-ranging (P < 0.0001) and captive nonvaccinated (P < 0.0001) cheetahs, whereas the latter two had similar OD levels (P = 0.11). Box and whisker plot: lower line, 25th percentile; middle line, 50th percentile; upper line, 75th percentile; whiskers, 5th and 95th percentiles, respectively. *, outlier.