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A, The TH2 gene mean is highly reproducible in RNA aliquots of induced sputum from asthmatic patients. B, The TH2 gene mean in 13 asthmatic patients at repeat visits. Red lines, Persistent TH2-high asthma; black lines, intermittent TH2-high asthma; blue lines, persistent TH2-low asthma. Triangles represent subjects taking inhaled corticosteroids, and circles represent subjects not taking inhaled corticosteroids.
