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J Cell Biochem. 1986;30(1):79-85.

Immunoreactive fibroblast growth factor (FGF) in a transplantable chondrosarcoma: inhibition of tumor growth by antibodies to FGF.


Using a radioimmunoassay for bovine pituitary fibroblast growth factor (FGF), we have established the presence of the immunoreactive mitogen in extracts of a transplantable mouse chondrosarcoma. Both neutral and acidic extracts of the tumor contain an immunoreactive FGF (ir-FGF) that cross-reacts in a parallel and dose-dependent fashion in the radioimmunoassay. The ir-FGF is retained on heparin-Sepharose affinity columns and can be detected in the same molecular weight forms as rat pituitary FGF. Mice (C57/Bl) inoculated with the tumor (10 mg, im) show a decreased rate of tumor growth when passively immunized with the antiserum to FGF. The results establish the presence of FGF in this tumor and implicate its role in the etiology of its development.

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