Fig. 1

Ephrin-A2 expression in the developing auditory brainstem shown in coronal sections. a At E17 ephrin-A2 is expressed in regions surrounding MNTB, with relatively lighter, patchy label within MNTB. b At E17 light, fibrous expression of ephrin-A2 is seen throughout VCN. c At P0 expression is seen just outside MNTB with sparse expression inside the nucleus. d Expression remains in VCN. e At P4 expression outside MNTB has increased. Inset shows light label within MNTB. f Expression remains in VCN; inset shows fibrous label. g Expression of ephrin-A2 is greatly diminished in MNTB at P12. h At P12 ephrin-A2 expression is relatively decreased in VCN compared to earlier ages. Scale bar in G, 200 μm, applies to A, C, E, G. Scale bar in H, 200 μm, applies to B, D, F, H. Scale bar in insets, 20 μm