Figure 4From: Lysosomal drug sequestration as a mechanism of drug resistance in vascular sarcoma cells marked by high CSF-1R expressionCanine hemangiosarcoma cells express ABCB1 and ABCG2. (A) Cell surface expression of the ABC transporters by COSB and (B) DD-1 cells was assessed using flow cytometry. Positive staining is indicated by the solid black lines, and the isotype controls are represented as shaded regions. MFI = mean fluorescence intensity.Back to article page