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Figure 3: Lineages of excitatory and inhibitory neurons in the cochlear nucleus. (upper panel) Schematic of cochlear neuron lineages. Glutamatergic excitatory neurons are derived from the Atoh1-expressing RL whereas glycinergic/GABAergic inhibitory neurons are generated from Ptf1a-expressing neuroepithelial domain of the middle hindbrain (r2~5). (lower panel) Various cochlear nucleus neurons characterized by neurotransmitter subtype and location. DCoN: dorsal cochlear nucleus; VCoN: ventral cochlear nucleus; aVCoN: anterior VCoN; pVCoN: posterior VCoN; FCL: fusiform cell layer; ML: molecular layer; DL: deep layer.