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. Author manuscript; available in PMC: 2022 Oct 1.
Published in final edited form as: Synapse. 2021 Oct;75(10):e22218. doi: 10.1002/syn.22218

Fig 5. Representative electron micrographs of delta opioid receptor-silver intensified gold (DOR–SIG) labeled spines in CA3.

Fig 5.

A-B. In SR of CA3, DOR-SIG particles are found in the cytoplasm (A) and near the plasma membrane (B). C. A spine with a DOR-SIG particle on the plasma membrane is contacted by mossy-fiber terminals. sp, spine; T, terminal. mf-T, mossy fiber terminal. Triangle, on plasma membrane SIG; Chevron, near plasma membrane SIG; Arrow, cytoplasmic SIG. Scale bar = 500 nm.