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High concentrations of CoCl2 inhibit the proliferation of LoVo cells in vitro, determined by MTT assay. LoVo cells were treated with various concentrations of CoCl2 (100-500 µmol/l) for seven days. A total of six samples were analyzed in each group. The assay was repeated independently a minimum of three times. Survival rate (%)=1-treatment group A490 nm/untreated group A490 nm. Values are presented as the mean ± standard deviation; *P<0.05.
