Fig. 1. Plots of the mean dose-corrected plasma concentrations of D-[¹⁴C]glucose, [¹⁴C]3-OMG and L-[³H]glucose as a function of time since (A–C) injection (insets: semi-log_e plots) and (D–F) oral gavage of the probes. In (A,D) rainbow lorikeets N=8 for all time points except at 20 min after injection, where N=6 and (B,C,E,F) red wattlebirds N=8 for all time points except at 30 min after injection of D-[¹⁴C]glucose, N=7. The units for concentration are proportion per µg of plasma, as values of d.p.m. µg^–1 plasma were normalised to injected or oral dose for each individual. Filled circles, L-[³H]glucose; unfilled circles, D-[¹⁴C]glucose; and unfilled inverted triangles, [¹⁴C]3-OMG.