Lack of GPI-linked proteins is not synergistic to the growth advantage of ΔHmga2⁺ hematopoietic cells. Proportions of CD24⁻ RBCs and FLAER⁻ granulocytes in Piga⁻Hmga2^WT mice and Piga⁻ΔHmga2⁺ mice at the ages of 4 months and 7 months.