Ultrastructure of synapses in the lateral line canal organ

G. Benshalom, Å Flock

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The ultrastructure of afferent and efferent synapses on hair cells in the lateral line canal organ of the fish Lota Iota was studied, utilizing various fixation and staining techniques. New information was obtained about membrane-associated material, such as the presynaptic body and postsynaptic densities, by examining glutaral-dehyde-fixed material not subjected to osmication. Contrast was instead obtained either by section staining with uranyl acetate and lead citrate or by block impregnation with phosphotungstic acid (PTA). PTA-staining enhances the postsynaptic membrane of both the afferent and efferent synapses. It also stains the presynaptic dense projections at the efferent synapse and in a differential fashion, the afferent synaptic body. Section staining reveals a substructure in the feet of the afferent synaptic body, faintly seen but masked in osmicated tissue.

Original languageEnglish
Pages (from-to)161-174
Number of pages14
JournalActa Oto-Laryngologica
Volume90
Issue number1-6
DOIs
StatePublished - 1 Jan 1980
Externally publishedYes

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