FGF2 and cancer: Of the 16 cancer marker proteins used in the multiplex assay, six proteins, basic fibroblast growth factor (FGF-basic), leptin, platelet endothelial cell adhesion molecule (PECAM-1), sVEGFR-2, soluble interleukin-6 receptor alpha (sIL-6Rα), and stem cell factor (SCF) (Fig 9), did not show reduction in expression after treatment with Arthrospira sp.