FGFR1 and neoplasm: Expression of multiple FGF ligands and receptors (including FGF-2, FGFR-1 and both FGFR-2 IIIb and IIIc isoforms) was also detected by RT-PCR in 66c14 tumor cells (Figure 1A and data not show for FGFR-2 isoforms).