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Viability of Caco-2 cells after incubation with 107 CFU/well of HZ0301 and HZ0302 strains respectively and the controls for 3 h (MTT assay)
HZ0301: R. palustris; HZ0302: R. sphaeroides; MTT: 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide; CFU: Colony-forming units. Means with different superscript were significantly different (P<0.05)
