Effect of RTN4R-mutants on growth cone collapse
(a) Representative images of growth cone in chick retinal cells cultured in the presence of the RNT4R ligand RTN4. (b) Quantitative analysis of growth cone collapse. Chick dissociated retinal neurons transfected with the indicated plasmids encoding EGFP-RTN4R WT or mutants were cultured in the presence or absence of RTN4. **P<0.01, *P<0.05.