Fig. 2From: All-trans retinoic acid reduces cancer stem cell-like cell-mediated resistance to gefitinib in NSCLC adenocarcinoma cellsDetection of ALDH1A1 and CD44 expression of lung cancer cells treated with gefitinib by FCM as described in Methods. a. expression of ALDH1A1 (a-1 and a-2) and CD44 (a-3 and a-4) of A549 and A549GSC cells; b. expression of ALDH1A1 (b-1 and b-2) and CD44 (b-3 and b-4) of H1650 and H1650GSC cells. All experiments were performed in triplicate, and data are expressed as means±s.d. (n = 3). Error bars represent s.d. of replicate data points. *P < 0.05, compared to the controlBack to article page