MRC1 and ovarian carcinoma: The increase in ALDH+ enrichment and the emergence of CD206+ macrophages was also observed in CSC/M0-M2 hetero-spheroids generated from an additional high-grade serous cell line, Kuramochi (Additional file 1: Figure S8) and tumor cells and CSCs from a high-grade serous primary ovarian carcinoma sample Additional file 1: Figure S9).