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Quantitation of doxorubicin fluorescence intensity (au) in HCT-8 and HT-29 colorectal cancer xenografts (n=4 per treatment group) treated with doxorubicin ± MSC. Pretreatment with MSC showed an improved tumor delivery and penetration of doxorubicin in HCT-8 but not in the HT-29 xenografts, in the combination treatment group.
