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. Author manuscript; available in PMC: 2016 Dec 15.
Published in final edited form as: Neuromolecular Med. 2016 May 26;18(4):497–539. doi: 10.1007/s12017-016-8405-y

Fig. 4.

Fig. 4

Synaptic spines are generally similar in shape in various animals. These silhouettes of spines are based on drawings of Golgi stained neuronal spiny processes from different animals (Coss and Perkel 1985). The longest spines are under 4 μm (all drawn to scale). a Polyclad flatworm. b Honeybee. c Jewel fish. d Mongolian Gerbil