ABCG2 and neoplasm: Expressions of SOX2, OCT4, WNT, NANOG, ABCG2 and ALDH1A1 was assessed both at transcriptional and translational levels from spheroids and sorted populations of CD44+/24− and ALDH+ cells of CT-TNBC tumor (CSC) versus the whole tumor (Supplementary Fig. 1).