Table 3.

Cytotoxicity of P. acuminatus extract and Justicidin B to gastric (AGS) and colon (SW620) adenocarcinoma cells as well as to control Vero cells.

Sample	IC50 (µg/mL) ± S.D. 1
	AGS 2	SW620 2	Vero 2
P. acuminatus extract 3	11.3 a,* ± 0.7 (SI = 5.4)	10.5 a,* ± 0.5 (SI = 20.1)	226.6 a,◊ ± 4.2
Justicidin B 3	19.5 b,* ± 2.2 (SI = 4.2)	24.8 b,* ± 2.1 (SI = 21.5)	104 b,◊ ± 6

¹ Results are presented as mean ± SD of three independent experiments. ² Different superscript letters in the same column indicate differences are significant at p < 0.05 using ANOVA with a Tukey post hoc test. ³ Different superscript signs in the same row indicate differences are significant at p < 0.05 using ANOVA with a Tukey post hoc test.