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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Adj.1.collagenous - relating to or consisting of collagen
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References in periodicals archive ?
IGF-1 as a member of growth factor family can promote the regeneration of collagenous fiber in intercellular substance components and the stablization of bone trabecula structure.9 ET-1, an relevant indicator of peroxidation damage, can promote the decomposition of collagenous fiber and cytoskeletal structure and the loss of sclerotin or calcium salt.10 In order to further reveal the relationship between different biological factors and patients' disease condition, this study analyzed the changes of serum levels of IGF-1 and ET-1 in patients with osteoporosis who were treated in our hospital and explored their relationships with cytokines and bone density.
Demirkoparan said, "To our knowledge, we are the only ones creating a simulation of cervical collagenous tissue in Qatar, and I think our research can contribute a lot to this area of investigation."
The connective tissue in humans, rats and mice is introduced and surrounds each glandular structure, being represented mainly by limited collagenous tissue available in irregular bundles at the level of the intercalated and striated ducts and more abundant collagenous tissue at the excretory level, accompanied by fibroblasts among the fibers (Fig.
Many ACE-inhibitory peptides have been produced by enzymolysis from animal and plant proteins, such as native collagenous [6], rice bran protein [7], Porcine skin gelatin [8] and bovine caseins [9].
Scattered lymphocytic and plasma cell infiltrates with abundant dense hyalinized collagenous stroma and focal small calcifications are seen.
Dedifferentiated liposarcoma that resembles desmoid-type fibromatosis tends to be hypocellular and consist of bland spindle cells streaming through collagenous stroma.
Spindle cells have tapered nuclei without nucleoli, pale cytoplasm and associated with abundant collagenous stroma.
Histologically, the tumor contained malignant cells with variable levels of differentiation and vascular structures covered with clustered or blister-like malignant endothelial cells, and highly differentiated solid regions consisting of malignant fusiform cells in collagenous and myxoid stroma.
His method uses a femtosecond oscillator to alter biochemical and biomechanical properties of collagenous tissue without causing cellular damage and tissue disruption.
Background: Desmoplastic fibroblastoma (collagenous fibroma) is an uncommon benign soft-tissue tumor, rarely involving bone.
These cells are embedded in a fine fibrillary collagenous matrix, with occasional scattered Meissner corpuscles (eosinophilic lamellar structures) [4].