Fig. 5.

Effect of IL-3 on huMC cultures. Enriched progenitor cells from lymphocytapheresis were cultured with MC medium for 7 weeks with or without 30 ng/ml of human IL-3 added on the first day of culture only as described. A. After cells were cultured for 7 weeks, cell surface markers were analyzed with flow cytometry. (IL-3 culture, N=5; without IL-3, (N=3). B. Total mast cell numbers were counted after cells were cultured for 7 weeks with or without IL-3. P=0.165.