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Flow cytometry results of HT-29 (human colon carcinoma cell line) (A) and Hela (human uterine cervix cancer cell line) (B) cells incubated with Coumarin 6-loaded folate-modified self-microemulsifying drug delivery system + 1 mM folate (black), Coumarin 6-loaded folate-modified self-microemulsifying drug delivery system (green), Coumarin 6-loaded self-microemulsifying drug delivery system (blue) at an equivalent Coumarin 6 concentration of 15 μg/mL for 2 hours at 37°C.
