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Control subject Allergic asthmatic patient Fig. 4. Expression profile of cytokine genes in human lymphocytes detected by cDNA expression array system. RNA was extracted from human peripheral blood lymphocytes from (a) normal control subjects and (b) allergic asthmatic patients. Total RNA was reverse-transcribed and labeled with biotin, and gene expressions were detected using the Human Chemokine Nonrad-GEArray Kit (SuperArray Inc., Bethesda MD, USA). Negative control genes pUC18 DNA (1A, 2A)...