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Using absorption and fluorescence spectroscopic methods, quantitative cellular uptake of curcumin, an antioxidant and anti-tumor agent from Curcuma longa, was calculated in two types of normal cells: spleen lymphocytes, and NIH3T3 and two tumor cell lines: EL4 and MCF7. Both the uptake and fluorescence intensity of curcumin were significantly higher in tumor cells compared to the normal cells. A linear...
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