Specificity: Reacts with both alpha and beta isoforms. Epitope is within the NH2-terminus of Ig loop II sequence Lys145 and Glu159 between the acidic box and heparin-binding sequence of FGFr1.
Immunogen: Recombinant human ectodomain of FGFr1~ expressed in E. coli beginning with proline 23; antigen contained NH2-terminal gly-ser-pro-gly-ile and C-terminal glu-phe sequences.