ORAI1 and breast cancer: We found that only Stim1 (Figure 11A) was significantly (p<0.05) up-regulated in BC-ECFCs as compared to N-ECFCs, while there was no remarkable difference in the pattern of expression of Stim2 (Figure 11B), Orai1 (Figure 11C), Orai2 (Figure 11D) and Orai3 (Figure 11E).