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. 2014 Mar 24;9(3):e92355. doi: 10.1371/journal.pone.0092355

Figure 1. Effect of capsule and pneumolysin on CXCL8 and IL-6 induction in human nasopharyngeal and bronchial epithelial cells.

Figure 1

Detroit 562 nasopharyngeal epithelial cells (A and B) and bronchial epithelial cells (C and D) were assessed for CXCL8 (A and C) and IL-6 (B and D) release after exposure to wild type or mutant pneumococcal strains. All experiments were performed in triplicate at each of three CFU concentrations (1, 1.5 and 2 × 106) and the results pooled for each strain. Note different scales of Y axes. Error bars indicate SEM. * indicates significant difference.