Chronic ephrinA5-IgG infusion leads to an apparent increase of LTP in hippocampal slices prepared from C57BL/6 mice. Individual responses measured once every 30 sec are plotted.Open circles, EphrinA5-IgG infusion (n = 6); filled triangles, CD4-IgG infusion (n = 6). One hippocampal slice per experimental animal was tested; thus, n represents the number of animals analyzed. Error bars indicate SE. ANOVA revealed that the apparent immunoadhesin effect was not significant (F(1,10) = 1.973; p= 0.190) nor was the time × immunoadhesin interaction significant (F(60,600) = 0.447;p > 0.50).