
1) Albuminoid 2) Basis of horny tissue 3) Ceratin 4) Fibrous protein 5) Fingernail makeup 6) Fingernails, essentially 7) Hair protein 8) Makeup of some nails 9) Nail material 10) Nail or horn base 11) New rake can provide protein 12) Protein in hair and nails 13) Protein in hair straighteners 14) Protein in skin, nails, etc
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https://www.crosswordclues.com/clue/keratin

1) Ceratin 2) Epidermose
Found on
https://www.crosswordclues.com/clue/keratin

a hard, tough, non-soluble protein
Found on
http://imnh.isu.edu/digitalatlas/bio/glsry.htm

• (n.) A nitrogenous substance, or mixture of substances, containing sulphur in a loose state of combination, and forming the chemical basis of epidermal tissues, such as horn, hair, feathers, and the like. It is an insoluble substance, and, unlike elastin, is not dissolved even by gastric or pancreatic juice. By decomposition with sulphuric a...
Found on
http://thinkexist.com/dictionary/meaning/keratin/

A protein present in all cuticular structures of the body, such as hair, epidermis and horns.
Found on
http://www.ada.org/glossaryforprofessionals.aspx

A tough, fibrous, insoluble protein forming hair and finger nails.
Found on
http://www.americanhairloss.org/hair_loss_glossary/

A protein present in the organic matrix of the enamel of teeth.
Found on
http://www.dentistryforomaha.com/patient-info/dental-glossary/

a fibrous polymer which is notas strong as collagen but less soluble. It forms the strong and water-resistant properties of skin, nails, hair, horn and beaks.
Found on
http://www.encyclo.co.uk/local/20169

<protein> A protein that is a primary constituent of hair, nails and skin. ... (27 Sep 1997) ...
Found on
http://www.encyclo.co.uk/local/20973

(ker´ә-tin) any of a family of scleroproteins that are principal constituents of epidermis, hair, nails, horny tissues, and the organic matrix of tooth enamel. Because it is insoluble in gastric juice, keratin is sometimes used to coat pills that are meant to pass through the stomach unchanged.
Found on
http://www.encyclo.co.uk/local/21001

A tough protein that is the primary constituent of hair, nails and skin.
Found on
http://www.encyclo.co.uk/local/21512

a protein material of which the covering of horns is composed.
Found on
http://www.encyclo.co.uk/local/22035

A protein that hair, nails, skin, and horns are made of.
Found on
http://www.encyclo.co.uk/local/22217
Ker'a·tin noun [ Greek
ke`ras ,
-atos , horn.]
(Physiol. Chem.) A nitrogenous substance, or mixture of substances, containing sulphur in a loose state of combination, and forming the chemical basis of epidermal tissues, such as horn, hair, feathers, and the like. It is an in...
Found on
http://www.encyclo.co.uk/webster/K/5

(ker;ua-tin) An insoluble protein present in the epidermis and in epidermal derivatives, such as hair and nails.
Found on
http://www.mhhe.com/biosci/abio/glossary.mhtml

A hard protein that forms scales and claws and is the primary structural component of mature feathers. Avian keratin differs from the keratin of all other animals in its amino acid sequence.
Found on
https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter

a fibrous protein found in hair, nails, and skin
Found on
https://courses.lumenlearning.com/microbiology/chapter/glossary/

a tough, fibrous protein; the basic substance of hair, nails, horns, feathers, shafts, etc
Found on
https://sciencetrek.org/sciencetrek/topics/birds_of_prey/glossary.cfm

A protein found in hair, fingernails, hooves, horns
Found on
https://sciencetrek.org/sciencetrek/topics/skin/glossary.cfm

a tough protein found in skin, nails, and hair
Found on
https://www.encyclo.co.uk/local/20875

A cystine rich protein produced by the epithelial cells.
Found on
https://www.encyclo.co.uk/local/22445

A tough fibrous protein which is the key structural element in the outer layer of skin, hair and nails.
Found on
https://www.encyclo.co.uk/local/22743

A fibrous protein found in hair, nails and skin.
Found on
https://www.goodsalonguide.com/community/hair-and-beauty-glossary

a scleroprotein or albuminoid substance, found in the dead outer skin layer, and in horn, hair, feathers, hoofs, nails, claws, bills, etc.
Found on
https://www.infoplease.com/dictionary/keratin

A sulfur-containing protein that makes up hard tissues such as nails, horns and the outermost cells of skin.
Found on
https://www.marinemammalobservertraining.com/help/glossary/
No exact match found.