Table II.

Inhibitory rates of tumor weight in xenografts.

	LOVO xenografts		SW620 xenografts
Group	Weight, g	Inhibitory rate, %	Weight, g	Inhibitory rate, %
Phosphate-buffered saline	1.92±0.11	–	1.68±0.05	–
hIgG	1.81±0.06	5.73	1.73±0.06	−3.00
Cetuximab	1.37±0.05	28.65	1.63±0.03	3.00
NK cells	1.36±0.09	29.17	1.23±0.06	26.79
hIgG+NK cells	1.38±0.07	28.13	1.35±0.04	19.64
Cetuximab+NK cells	1.00±0.05	47.92	1.29±0.05	23.21

Values presented as mean ± standard error of the mean. hIgG, human immunoglobulin G; NK, natural killer.