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The Structural Events Associated with the Attachment of Complement Components to Cell Membranes in Reactive Lysis

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Journal Immunology
Date 1978 Aug 1
PMID 750370
Citations 18
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Abstract

Electron microscopic study of the events occurring at the cell membrane during reactive lysis by complement, showed that a foliaceous particle was formed at the C5b-7 stage, that enlarged to a particle with a variable number of arms at the C5b-8 stage. Up to this point, no typical complement lesions were found. At the C5b-9 stages, the particles were completely converted to typical complement lesions, i.e. hollow cylinders projecting from the cell membrane and partly penetrating it. C5b-9 complexes assembled in the fluid phase did not show the typical structure of the lesions, but were amorphous masses of fibres.

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