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1. Any of a class of extracellular proteins that are composed of three coiled polypeptide chains, form strong fibers, and are the main constituents of cartilage, bone, and other connective tissues in animals.
2. Material composed principally of collagen proteins. Collagen is converted into gelatin when boiled in water.

[Greek kolla, glue + -gen.]

col′la·gen′ic (-jĕn′ĭk), col·lag′e·nous (kə-lăj′ə-nəs) adj.
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Adj.1.collagenic - relating to or consisting of collagen
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In this study, we examined the expression of collagenic components using in vivo and in vitro studies involved in the PR-mediated regulation of the TGF-[beta]1/Smad signaling pathway, and demonstrated the anti-fibrotic effect of PR and its underlying mechanism.
Comments: Identified proteic fraction from Cucurbita pepo, Elastonyl protects and repairs elastic and collagenic tissues by controlling the proteoase activity and by stimulating the synthesis of ECM constitutive fibers.