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(a)The effects of different MT concentrations (0.0–60 μM) on the cell viability on MCF-7 (negative CD44) and BT-20 (positive CD44) cells, (b) Immunocytochemical staining of CD44.Very high expression was observed in BT-20 a breast cancer cell line, while the CD44 expression was not detectable in MCF-7.
