(E) Following 24 hours after the last treatment, extracted cells from tumors of either SHP-1 and Cbls or N.S siRNA loaded NKp46-NPs treated mice were analyzed by flow cytometry. Expression of CD107a was measured by mean fluorescence Intensity (MFI). Relative expression of CD107a MFI was normalized to the sample treated with N.S siRNA loaded NPs. The data represent three independent experiments. Data are shown as mean ± SEMn=3; P value was calculated by one sample t-test and is indicated within the graph P =0.009. 