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Effect of an anti–IL-5 antibody, TRFK5, on eosinophil numbers in bone marrow after allergen challenge. Sensitized guinea pigs were injected i.v. with control rat IgG or TRFK5 (0.3 mg/kg) 30 min before aerosol exposure to saline or allergen. Results are presented as mean±SEM (n = 5–6 animals/group) and significant differences between control and TRFK5-treated groups are indicated as *P <0.02 and **P <0.005.
