Table 3.

Neurochemical composition of WGA-labeled axon terminals in the rat VTA: synapse formation

WGA-labeled terminals making recognizable asymmetric synapsesWGA-labeled terminals making recognizable symmetric synapses
WGA-labeled terminals with VGluT2 signal [100% (n = 26)]92% (n = 24)8% (n = 2)
WGA-labeled terminals without VGluT2 signal [100% (n = 21)]24% (n = 5)76% (n = 16)