Figure 4.
Acquisition model. Nasopharyngeal pneumococcal colonization assessed by nasal lavages 7 hours (A) and 24 hours (B) post-infection with ~1,000 CFU Sp. 6A. Median values are indicated by a bar and each symbol represents the CFU/ml of a single mouse. CSE group (black circle) (n = 6 in 7 hours p.i. and 10 in 24 hours 4 p.i.) and PBS group (open square) (n = 6 in 7 hours p.i. and 9 in 24 hours 4 p.i.). Dotted line indicates the limit of detection (666 CFU/ml). Mann-Whitney U test was used for the statistical analyses.
