... axons inappropriately projected in both rostral and caudal directions in the absence of function-blocking reagents. Interestingly, in ovo perturbation of endogenous B-class Eph receptor-ephrin interactions results in rostrocaudal polarity defects at the ventral midline of the developing chick spinal...

... is expressed at the lateral floor plate boundaries, at the interface between the floor plate and the ventral funiculus. In contrast, B-class Eph receptors are expressed on decussated commissural axon segments projecting within the ventral funiculus, and on ipsilaterally projecting axons constituting...