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Toxicity profile of calix[4]arene vectors. Toxicity profile of glioma U251 cells (A–D) and HT29 colon cancer cells (E–H) cells after short exposure (24 h) (A,B,E,F) and middle-term exposure (72 h) (C,D,G,H) to calix[4]arene vectors. The toxicity profile was determined by MTT assay. Results are presented as mean ± S.E.M; statistical differences between groups were compared using a one-way repeated measures ANOVA. (*) p < 0.05, significant.
