Fig. 1. Plots of mean (± s.e.m.) plasma L-rhamnose concentration versus time since its oral or injected administration into Egyptian fruit bats (N=11). Each concentration (ng mg^–1 plasma) was normalized to the dose administered to the bat. The inset shows the mean values on a semi-log plot. The line through points from the injection trial is the nonlinear fit to the biexponential model: C_t=Ae^–t + Be^–ßt (see Materials and methods, and Table 2 for derived parameters). The line is extrapolated beyond the data to permit visual comparison with the data from the oral administration trial.