TABLE 1.

Differential cell content in BAL fluid samples before and after nasal or oral vaccination

Cell type	Differential cell content (%)
	Prevaccination		Postvaccination
	Mean ± SD	Range	Mean ± SD	Range
Macrophages	84.2 ± 9.1	58–96	85.6 ± 4.8	73–94
Lymphocytes	12.6 ± 7.6	2.5–34	11.7 ± 3.9	3.5–21
Monocytes	2.2 ± 1.9	0.5–8	1.4 ± 0.8	0.5–3
Eosinophils	1.1 ± 0.5	0–2	1.4 ± 1.0	0–3.5
Neutrophils	0.03 ± 0.13	0–0.5	0.03 ± 0.13	0–0.5