part of part of has part has part has_part dopaminergic neuron organ part substantia nigra pars compacta SNpc BM:MB-SNc BAMS:SNc BTO:0003749 DHBA:12252 MBA:374 BIRNLEX:990 Regional part of substantia nigra consisting of a densely packed region of cells, more or less dorsal to the pars reticulata, but extending into the pars reticulata in some species. The dominant neurotransmitter used by pars compacta neurons is dopamine. Pars compacta neurons are pigmented in many species (MM). EMAPA:35836 NCIT:C97341 substantia nigra, compact part substantia nigra, compact division substantia nigra compact part Wikipedia:Substantia_nigra_pars_compacta UBERON:0001965 pars compacta BAMS:SNC compact part of substantia nigra FMA:62907 pars compacta of substantia nigra MA:0001064 HBA:9074 substantia nigra compacta substantia nigra