Fig. 3.
IL-5–induced eosinophil survival of wild-type and Syk−/− fetal liver–derived cells.
Mature eosinophils from 6-day-old (left) and 8-day-old (right) cultures (viability of wild-type [■] and Syk−/− [▪] cells at the starting date) were maintained with the indicated concentrations of IL-5 for 48 hours, after which time the viability of wild-type (○) and Syk−/− (●) cells was monitored as described in “Materials and methods.” Values are expressed as mean ± SEM of 4 independent experiments.