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The cytotoxicity of skin cancer A375 cells, lung cancer A549 cells, and colon cancer Caco-2 cells after treatment with the ethanolic extract from cyanobacteria, Leptolyngbya sp. KC45 when compared with control cells, i.e., normal Vero cells, for 48 h. Cell viability was measured using the 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide reduction (MTT) assay (a) and calculated for comparisons with the control cells (b).
