34-1-2s induces a quicker serum MIP-2 response in SCID mice. BALB/c mice (●, N = 5) or SCID mice (○, N = 5) were injected with 2.3 mg/kg 34-1-2s mAb, and MIP-2 levels were measured in the sera of the mice at the indicated times by commercial ELISA. Data are mean ± SEM MIP-2 concentration from 5 mice in each group. (Inset) MIP-2 standard curve.