Bioluminescence
imaging of substrates with ES-2-Fluc tumors in
nude mice (a and b): (a) integrated bioluminescence emission for mice
using various concentrations of luciferins (ip; 10 μM, 100 μM,
1 mM, 4 mM, and 10 mM; 100 μL); (b) representative bioluminescence
images of a nude mouse implanted with ES-2-Fluc xenografts after intraperitoneal
injections of various luciferins (10 μM, 0.1 mL). Comparison
of dLuc, aLuc, and cybLuc in luciferase-expressing transgenic mice
(c–e): (c) representative bioluminescence images of luciferase-expressing
transgenic mice administered dLuc, aLuc, and cybLuc iv (1 mM, 0.1
mL); (d) total photon output from the heads of luciferase-expressing
FVB transgenic mice treated with dLuc, aLuc, or cybLuc; (e) head-to-back
ratio of bioluminescence. All assays were performed in triplicate
and presented as the mean ± SEM; *, P < 0.05.