Effects of Src, Syk, Btk, and PKC deficiencies on IgE-induced migration. IgE- and IgE+Ag-induced migration assays were performed using Src family PTK-deficient (A), Syk-deficient (B), Btk-deficient (C), and PKC-deficient (D) BMMCs. Values (mean ± SD) are shown out of 2 independent experiments.