1 2 0 http://purl.obolibrary.org/obo/GO_0036520 astrocyte-dopaminergic neuron signaling 'astrocyte-dopaminergic neuron signaling' SubClassOf 'cell-cell signaling' 'astrocyte-dopaminergic neuron signaling' SubClassOf http://purl.obolibrary.org/obo/GO_0150098 http://purl.obolibrary.org/obo/GO_0150098 glial cell-neuron signaling 'glial cell-neuron signaling' SubClassOf 'cell-cell signaling' http://purl.obolibrary.org/obo/GO_0150099 neuron-glial cell signaling 'neuron-glial cell signaling' SubClassOf 'cell-cell signaling'