FGFR1 and cancer: We have previously obtained similarresults for multivalent antibodies and coiled-coil-triggered FGF1oligomers.30,31 Since the high affinity of thetargeting molecules to FGFR1 ensures its precise recognition on thesurface of cancer cells, we decided to evaluate the applicabilityof GFPp_FGF1 oligomers as fluorescent drug carriers in the selectivedestruction of FGFR1-overproducing cancer cells.