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Fig. 1 | Respiratory Research

Fig. 1

From: Cigarette smoke alters the ability of human dendritic cells to promote anti-Streptococcus pneumoniae Th17 response

Fig. 1

S. pneumoniae-induced cytokine secretion by PBMC from non-smoker healthy subjects (n = 14), smokers without COPD (n = 13) and COPD patients (n = 9). Supernatants were collected after 24 h incubation without stimulation (white columns) or after addition of S. pneumoniae (black columns). a IL-1β, b IL-6, c IL-12 and d IL-23 were quantified by ELISA. Data are reported as mean ± S.E.M. *P < 0.05, **P < 0.01, ***P < 0.001

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