We were unable to detect a consistent signal with phospho-ERK antibody in any of these cell types and, therefore, were not able to determine whether phospho-ERK localizes with NG2 or NG2-T2314E in apical microspikes.Distinct effects of Thr2314 and Thr2256 phosphorylation on cell motilityNG2 expression has been shown to have a stimulatory effect on cell motility (Burg et al., 1997; Fang et al., 199