Axon-carrying dendrites, AcDs, have been reported in hippocampus to be privileged dendrites which can directly feed synaptic inputs into an axonal output bypassing the soma and escaping somatic inhibition. In non-primate neocortex, 15–20% of the pyramidal cells have basal AcDs and comparable proportions occurred in organotypic cortex cultures. How does an axon happen to emerge from a dendrite? Very immature migrating pyramidal...