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NTHI 2019 stimulates greater cytokine gene expression by HMEE cells. Results are mean fold increases in IL-1β, IL-6, and TNF-α transcript levels (± SEM) for three separate experiments. ✻✻, P < 0.01 (NTHI 2019 versus B29); ✻, P < 0.05 (NTHI 2019 versus B29).
