Skip to main content
. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: Brain Res. 2019 Jul 23;1722:146349. doi: 10.1016/j.brainres.2019.146349

Figure 2.

Figure 2.

VGluT1+ axon terminals (V1t) form asymmetrical synapses with M1R+ spines (Ms) and unlabeled M1R-negative spines (Us) in the BLa. (A) A VGluT1+ terminal forms an asymmetrical synapse with an M1R+ spine. Arrows indicate postsynaptic densities in this and all other electron micrographs. An arrowhead indicates a representative M1R+ particle near the postsynaptic densities. There are four more M1R+ particles in this spine. (B) A VGluT1+ terminal forms an asymmetrical synapse with an M1R+ spine. There is also an M1R+ particle in the terminal at the active zone of the presynaptic membrane (arrowhead). (C and D) VGluT1+ terminals form asymmetrical synapses with M1R+ spines. E) A VGluT1+ terminal forms an asymmetrical synapse with an unlabeled spine. F) VGluT1+ terminals form asymmetrical synapses with an M1R+ spine (left) and an unlabeled spine (right). Scale bar = 500 nm.