Table 3.

Cytotoxicity of the tested extracts in a panel of human tumor cell lines after 72 h exposure (MTT assay)

Extract/compound	IC50 (µg/ml)a
	LAMA-84	K-562	HD-MY-Z	EJ
L. linearifolium	0.031 ± 0.05	0.603 ± 0.019	0.616 ± 0.022	0.912 ± 0.031
Etoposideb	0.124 0.102	0.311 ± 0.092	0.247 ± 0.04	0.379 ± 0.044

^aData represent the arithmetic mean (±SD) of four separate experiments

^bPositive control