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effects of phytosterol treatments on colon length and fecal hemoglobin contents; (a) colon length, (b) picture of colon from 4 groups and (c) fecal hemoglobin contents on day 10 to 13 of each group (one sample per cage each day; the error bars are sd of 3 determinations); a, b, c and d on top of bars indicating significant difference (p<0.05) by anova.
