Urinalysis results in Rag2–/– mice 13 days after they received 1 × 108, 5 × 107, or 1 × 107 anti-MPO splenocytes, anti-BSA splenocytes, or nonimmunized control splenocytes. Samples taken before injection of splenocytes showed mean proteinuria 1.0+, hematuria 0.2+, and leukocyturia 0.0+ (data not shown).