Metabotropic glutamate receptor 4-immunopositive terminals of medium-sized spiny neurons selectively form synapses with cholinergic interneurons in the rat neostriatum
E. Kuramoto, F. Fujiyama, T. Unzai, K. Nakamura, H. Hioki, T. Furuta, R. Shigemoto, F. Ferraguti, T. Kaneko, Journal of Comparative Neurology 500 (2007) 908–922.