sentence: The following rabbit monoclonal antibodies were purchased from Cell Signaling Technology : Lck ( clone 73A5 ) , Lyn ( clone C13F9 ) , Zap70 ( clone D1C10E ) , Syk ( clone D1I5Q ) , SHP-1 ( clone C15H6 ) , p27 ( clone D69C12 ) , and cMyc ( clone D84C12 ) .