Table 1: IFN-γ-producing capabilities of spleen cells from LPS and/or Ni pre-treated mice.

LPS NiCl2 NiSO4 #Mean ± SD *P<
- - 201.8 ± 4.9 0.0001
- + 152.7 ± 5.9
+ - 142.9 ± 4.5 0.0001
+ + 109.8 ± 2.8
- - + 126.6 ± 4.5 0.01
- + + 108.6 ± 2.3
+ - + 124.4 ± 4.4 0.001
+ + + 183.0 ± 8.4

#The mean (ng/ml) ± standard deviation (n=5).
*Student’s t-test, NiCl2 innoculated (+) vs. uninnoculated (-).