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Association of CC16 mRNA expression levels in bronchial epithelial cells with asthma susceptibility and asthma severity in the (A) SARP (Severe Asthma Research Program) cross-sectional cohort and (B) longitudinal cohort. CC16 mRNA expression levels have been logarithm base 2 (log2)- and natural logarithm (ln)-transformed in the (A) SARP cross-sectional cohort and (B) longitudinal cohort, respectively.
