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Cytotoxicity of Bletilla striata polysaccharide (BSP) based on L929 cells treated with BSP. (A) MTT assay. Control (+): ZDEC (zinc diethyldithiocarbamate); Control (−): Al2O3. * p < 0.05, ** p < 0.01, *** p < 0.001 compared with control group, n = 6. (B) Live/dead staining (24 h).
