Expression levels of IL-7R (CDw127) in T-ALL cells correlate with the apoptosis-inhibiting effects of IL-7 (▵N^IL-7).

Leukemic cells were incubated in the presence and absence of IL-7 for 24 hours at 37°C and assessed for apoptosis by flow cytometry, and the cytokine-specific apoptosis modulation (ΔN) was calculated as the difference between the extent of apoptosis in the presence and absence of the cytokine. CDw127 expression was quantified in MESF units using calibration beads.