argyrophilic fibers

ar·gyr·o·phil·ic fi·bers

reticular connective tissue fibers that react with silver salts and appear black microscopically.
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References in periodicals archive ?
Argyrophilic fibers were stained by Foot method, and fibrin was stained by Shueninov.
This may be due to replacement of fine argyrophilic fibers which appeared early and subsequently replaced by coarse fibers of collagen which appeared during later stages of wound healing, thus resulting in decrease in reticulin amount.