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Effect of Porphyra dentata F2 fraction on viability of 4T1 cells. The 4T1 cells were incubated in DMEM culture containing 10% FBS and sample at indicated concentrations for 24 h and 48 h. Thereafter, the cells were subjected to MTT assay. The proliferation percentage (%) was defined as 100 multiplied by the ratio of the OD490 value of the cells treated with sample over the OD490 value of the control cells. Data are expressed as mean ± S.D. (n = 3).
