CD4 and Increased total eosinophil count: Transfer of CD3IL-5+ CD3+ T cells induced blood eosinophilia in SCID-bg mice compared to the 0.9% NaCl-injected control animals and the animals that had been given CD3IL-5+ CD4+ T cells (27 ± 8 vs. 0.6 ± 0.2 and 5 ± 3 × 104/ml; P = 0.001 and 0.015, respectively; Fig. 2B).