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Fig. 5. EphA5 and EphA3 are expressed in presumptive cC-VC
neurons, and ephrin A2 protein is distributed in a gradient in caudal
hindbrain. (A,B) EphA5 and EphA3 in situ
hybridisation on stage 25 hindbrains, respectively. The blue brackets in both
images indicate expression domains correlating with the location of cC-VC
neurons. (C) Ephrin A2 immunohistochemistry on a lateral parasagittal
section of a stage 26 brainstem. The graded distribution of ephrin A2 in the
caudal hindbrain is indicated by arrows a, b and c. Inset shows ephrin A2
protein in tectum and cerebellum from the same brain. (D) Ephrin A2
immunostaining on three transverse sections from a stage 26 hindbrain. a-c
correspond approximately to positions a-c in C. CB, cerebellum; gV, trigeminal
ganglion; ov, otic vesicle. Scale bar: 400 µm in A,B; 200 µm in C, inset
in C and D.