expresses expresses neuron of the substantia nigra GABAergic interneuron of the anterior substantia nigra pars reticulata 2024-09-23T13:56:01Z aSNpr A GABAergic interneuron that has its soma in the anterior section of the substantia nigra pars reticulata. This GABAergic interneuron is characterized by the expression of Six3 and Foxp1 and it develops from Nkx6-2 expressing neuronal progenitors in the ventrolateral midbrain-diencephalon region. forkhead box protein P1 POU domain, class 6, transcription factor 2 homeobox protein SIX3