Wanlong Lei, Yunping Deng, Bingbing Liu, Shuhua Mu, Natalie M. Guley, Ting Wong and Anton Reiner Confocal laser scanning microscopy and ultrastructural study of VGLUT2 thalamic input to striatal projection neurons in rats Journal of Comparative Neurology 521
We found that cortical terminals account for 60% of the excitatory input to rat striatum, and thalamic terminals account for 40%. The image shows the relative abundances of VGLUT1+ cortical (green) and VGLUT2 thalamic (magenta) terminals in striatum as viewed by confocal microscopy. The majority of VGLUT2+ thalamic terminals (66.8%) synapse on spines and the remainder on dendrites. The VGLUT2+ terminals showed a slight, but significant tendency to end preferentially on the spines and dendrites of D1+ direct pathway neurons.
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