Elevated serum osteopontin level is associated with blood eosinophilia and asthma comorbidity in patients with allergic rhinitis

The detection limit for OPN, IL-5, and ECP was 312.5 pg/mL, 3.9 pg/mL, and 2.0 ng/mL, respectively. [...]EOS number in venous blood was measured and counted with a standard automated cell counter. In agreement with OPN production, blood EOS number and serum ECP and IL-5 levels in the asthma+ group w...

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