Effects of Ly49G2 or Ly49C/I NK-cell subset depletion on β2m^−/− BMC rejection by B6D2F1 hybrid recipients. Two days after mAb treatment, 30 million of β2m^−/− BMCs were injected into lethal irradiated B6D2F1 recipients. Seven days after transplantation, CFU-c assay was done from spleens (mean ± SEM). One-way ANOVA test was performed to determine whether the mean values were significantly different (P < .05). Data are representative of 2 experiments.