Table 1.

IC₅₀ values of NEM and Cuban propolis (CP) samples.

	NEM (µM)		CP (µg/mL)
	HT-29	LoVo	HT-29	LoVo
24 h	57.1 ± 3.7	64.3 ± 4.7	83.0 ± 8.2	73.8 ± 5.7
48 h	33.4 ± 2.8 **	35.9 ± 9.1 &&	39.9 ± 8.9 ***	43.7 ± 6.3 &
72 h	25.7 ± 3.3 ***/$	22.8 ± 6.2 &&&/#	20.2 ± 6. 8 ****/$	24.9 ± 10.7 &&&/#

Data are expressed as mean ± S.D. HT-29 cells: ** p < 0.01; *** p < 0.001, **** p < 0.0001 vs. 24 h. ^$ p < 0.05 vs. 48 h; LoVo cells: ^& p < 0.05, ^&& p < 0.01, ^&&& p < 0.001 vs. 24 h. ^# p < 0.05 vs. 48 h.