Figure 1C shows histological sections of poorly differentiated H&E stained tumor tissues. Immunofluorescence staining of MDA-MB-231 and Hs578T tumor sections was performed using an EDB-FN specific G4 antibody. Strong EDB-FN expression was observed in Hs578T tumors when compared to the MDA-MB-231 tumor sections (Figure 1D). Western blot analysis also revealed abundant expression of EDB-FN in Hs578T tumors when compared to MDA-MB-231 tumors (Figure 1E, Supplementary Datasheet 1). Here, FN1 is linked to neoplasm.