Figure 6: Dot-blotting analysis of Streptococci pneumoniae strains. A) anti-PSPF antisera; B) Control sera. S. pneumoniae serotypes under study: 1-6, 2-19, 3-19F, 4-6ABС, 6-9VA, 6-19A, 7-3, 8-34, 9-14, 10-9L.