Flow cytometric analysis of cells in PB, BM, spleen, and liver from normal littermates (upper) and Tg-mice (lower) treated with 500 ng of hGM-CSF. Cells were stained with FITC–anti-CD3 and PE-anti-NK1.1. CD3⁻NK1.1⁺ cells in PB, BM, spleen, and liver increased in Tg-mice.