Figure 1From: In vitro growth of pneumococcal isolates representing 23 different serotypesFinal growth densities of 23 isolates (representing each of the serotypes included in 23vPPS) following overnight incubation (18 h, closed circles or 24 h, open circles) in serum broth (SSI) or TH-broth (SSI, Oxoid, Sigma, Difco) with a starting inocula of approximately 1 × 103 CFU/ml. Horizontal lines are the mean +/- SD.Back to article page