Terminal-of-passage ( Swanson & Bota, 2010 ) : A terminal (Cajal, 1899) on a very short stalk that protrudes from an axon trunk or axon collateral (Cajal, 1899) along its course rather than at the terminal arborization (Cajal, 1888) of the trunk or collateral. With the light microscope they resemble dendritic spines. See Fox & Barnard (1957, Fig. 9), Gerfen & Sawchenko (1984, pp. 231, 235, Fig. 10-F).
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