Invasiveness of BT-C and BT-K cells. (A) The invasive ability of BT-C and BT-K cells was measured using Matrigel invasion chamber assay. Hematoxylin staining was used for staining the invaded cells. Scale bars = 200 μm. (B) The invasion of BT-C and BT-K cells treated with different dilution of anti-bSOLD1 antibody (1:100, 1:500, and 1:1000). Fold change was calculated by dividing each value by the average value in NRS (1:100). The asterisk (A) and different letters (B) indicate values that are significantly different from each other (P < 0.05).