Supplementary Fig. 1.

CD133⁺ cells show an increased in vitro invasive potential compared to CD133⁻ cells. (A) Examination of invasive ability of sorted CD133⁺ cells utilising a collagen-based cell invasion assay. Fetal bovine serum (FBS) was used as a chemoattractant. Scale bar = 100 μm. (B) Quantification of invading cells.