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Presence of high amounts of LPS in CR asthma BAL fluid. (A) The content of LPS in BAL fluid was analyzed by the chromogenic limulus amebocyte lysate test and normalized to the total protein level in each sample. IL-8 mRNA expression by BAL cells from CR and CS asthmatics positively correlates with the % of neutrophils in BAL samples (B) and amounts of LPS in BAL fluid (C) (filled circles – CR asthmatics, opened circles – CS asthmatics).
