intermediate filaments
Definition: a class of tough protein filaments (including keratin filaments, neurofilaments, desmin, and vimentin) that measure 9–11 nm in thickness and make up part of the cytoskeleton of the cytoplasm of most eukaryotic cells; so named because they are intermediate in thickness between actin filaments and microtubules.
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Examples: glitazone, GI cocktail, etc.

