Table 3. The cell viability for HT-29 cells with ultrasound AgNPs during 24 and 48 hours by MTT.

Concentrations (µg/ml)	3.125	6.25	12.5	25	50	100
Cell viability (% of control)	a63.5±‏ 0.38	37.5‏ ±‏ 0.88	24.75±0.78	22.25±0.28	11.5±0.58	4.5±0.36
	b50.2±‏ 0.57	36.6±‏ 0.52	23.8‏ ±‏ 0.44	14.7±0.25	10.3±0.15	3.9±0.02

* Percentage of cell survival within 24 (a) and 48 (b) hours