PGP and neoplasm: In our experiments in both the A2780 and the A2780AD, as well as the KB-3-1 and KB-V-1 Pgp+ and Pgp− cell line pairs, just as the xenografts made with these cell lines, all three tumor diagnostic tracers (18FDG, 18F-FLT, and 11C-methionine) could be well used.