Table 2.

Th2/Th1 (IgG1/IgG2a < 1 and IgG2b/IgG2a < 1) antibody ratios. IgG isotypes were detected by ELISA from serum samples of BALB/c mice (RSV-infected and PF DNA-immunized) on day 49. Data is presented as an average of triplicates performed twice.

	IgG1/IgG2a		IgG2b/IgG2a
	RSV	PF DNA	RSV	PF DNA
Day 14	0.168	0.679	0.911	0.850
Day 28	0.553	0.443	0.827	0.666
Day 49	0.392	0.236	0.767	0.819