TABLE 4.

Analysis of BAL lymphocyte subsets 5 days after RSV challenge^a

Vaccineb	No. of cells/ml (103)
	CD4− CD8−	CD4+	CD8+	CD4+ CD8+
VSCF	493	535	779	0.7
VV-F.mIL-2high	246	208	311	0.7
VV-F.mIL-4high	378	330	453	0.7
VV-F.mIFN-γhigh	360	200	407	0.5
VA-βgal	105	198	178	1

^aCells obtained from repeated BAL of groups of five mice were pooled, and total cells were counted by light microscopy. Cells were stained for CD4⁺ and CD8⁺ and analyzed by flow cytometry. The percentage of cells displaying CD4⁺ or CD8⁺ was converted into thousands of cells per group of five mice. 

^bMice were immunized i.p. with 2 × 10⁶ PFU of rVV and challenged i.n. with RSV 3 weeks after vaccination.