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. 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 3.

Figure 3.

VGluT2+ axon terminals (V2t) form asymmetrical synapses with M1R+ spines (Ms) and unlabeled M1R-negative spines (Us) in the BLa. (A and B) VGluT2+ terminals form asymmetrical synapses with M1R+ spines. (C) A large M1R+ spine is postsynaptic to a VGluT2+ terminal and an unlabeled terminal (Ut). The unlabeled terminal contains one M1R+ particle. (D) A VGluT2+ terminal forms an asymmetrical synapse with an M1R+ spine. (E and F) VGluT2+ terminals form asymmetrical synapses with unlabeled spines. Scale bar = 500 nm.