Synapse-of-passage ( Gerfen & Sawchenko, 1984 ) : A synapse (Foster & Sherrington, 1897) formed by either a terminal-of-passage or a bouton-of-passage; see Gerfen & Sawchenko (1984, pp. 231, 235, Fig. 10-F), Peters et al. (1991, pp. 150, 187, 358).
