Table 2.

Concentrations of five Helichrysum zivojinii extracts, which induced 50% decrease in the target cancer cell survival, determined by MTT test

	HeLa	Fem-x	K562	MDA-MB-361
Extract 1 IC50 [μg/ml]	24.63 ± 4.12	28.85 ± 5.49	11.78 ± 0.94	81.74 ± 6.27
Extract 2 IC50 [μg/ml]	20.11 ± 4.49	23.64 ± 1.41	23.82 ± 6.54	81.74 ± 13.31
Extract 3 IC50 [μg/ml]	37.98 ± 2.33	47.04 ± 4.79	27.52 ± 4.96	79.93 ± 13.49
Extract 4 IC50 [μg/ml]	56.70 ± 6.05	74.84 ± 7.55	50.37 ± 3.28	69.96 ± 11.70
Extract 5 IC50 [μg/ml]	84.68 ± 10.39	77.29 ± 6.55	74.88 ± 7.57	94.92 ± 6.85
Cisplatin IC50 [μM]	5.60 ± 1.41	5.02 ± 0.59	5.35 ± 0.70	28.23 ± 5.04

Time of continuous agent’s action was 72 h.