(A) Fluorescence images of normal cells (NIH
3T3) or cancer cells
(B16F10, PANC1) either kept untreated (UT) or treated with Is-PMB,
Is-amine, BetA-FITC, Is-BetA, and Dox, respectively. (B) Quantitative
uptake of Is-BetA, Dox, Is-PMB, Is-amine, and Bet-FITC in cells as
depicted. The data is represented as percentage of fluorescent molecules’
uptake per microgram of protein.