ANPEP and rhabdomyosarcoma: Consistent with the results of the RT-PCR, CD8+IFN-γ+T cells in the spleen and lymph nodes of rhabdomyosarcoma-bearing APN−/− mice were markedly boosted, compared with CD8+IFN-γ+ T cells from rhabdomyosarcoma-bearing wild-type mice (Figure 4B).