... than in basophils (IC50 = 1.13 +/- 0.46 nM vs 5.28 +/- 0.88 nM; p less than 0.001 ... than in lung mast cells (88.4 +/- 2.5% vs 76.4 +/- 3.8%; p less than 0.01). ... were challenged with Ag (IC50 = 25.5 +/- 9.5 vs 834.3 +/- 79.8 nM; p less than 0.001 ... ), anti-IgE (IC50 = 9.4 +/- 1.7 vs 441.3 +/- 106.7 nM; p less than 0.001 ... 0.001) and anti-IgE (90.4 +/- 1.8 vs 62.3 +/- 2.9%; p less than 0.001). ...