Fig. 2From: Anticancer properties of ester derivatives of betulin in human metastatic melanoma cells (Me-45)The cytotoxicity studies evaluated Me45 cells treated with betulin and its new derivatives after a 24 h; b 48 h and c 72 h where: A—Betulin‐l ‐Lys‐NH2; B—Betulin‐l ‐Orn‐NH2; C—Betulin‐l ‐Dab‐NH2; D—Betulin‐l ‐Dap‐NH2; E—Betulin‐l ‐Ala‐NH2; F—betulin; G—betulinic acid. P ≤ 0.05 (*)Back to article page