Table 1.

Half-maximal inhibitory concentration (IC₅₀) determined in the cell viability and proliferation assay (MTT) assay and Trypan blue exclusion testing of human glioblastoma U251 cells treated for 24 h and 48 h with the Les-3288, doxorubicine (Dox), and temozolomide (TMZ)

IC50 μg/mL	MTT assay		Trypan blue testing
	24 h	48 h	24 h	48 h
Dox	0.96	0.41	0.88	0.13
Les-3288	0.74	0.31	0.63	0.22
TMZ	50.26	24.43	50.02	34.00