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		Definition of keratin in English: keratinnoun ˈkɛrətɪnˈkɛrədən mass nounA fibrous protein forming the main structural constituent of hair, feathers, hoofs, claws, horns, etc. 角蛋白 Example sentencesExamples -  Amino acids are absorbed by the body to help build keratin, the main protein in hair.
 -  Mammalian hair, made of a protein called keratin, serves at least four functions.
 -  Hair is composed of non-living tissue, mostly of a fibrous protein known as keratin and is devoid of nerves.
 -  Animal hair fibers consist of a protein known as keratin.
 -  Gecko spatulae are made of keratin, the protein in human hair.
 -  The mature nail is a plate of the protein keratin which is also present in hair and skin.
 -  Your fingernails are composed of layers of keratin, a protein also found in hair and skin.
 -  They are unable to grow in living tissues but instead can multiply in structures containing keratin.
 -  Fungal infections usually affect the skin because they live off keratin, a protein that makes up skin, hair and nails.
 -  Cat claws are made of keratin, a protein also found in human nails.
 -  Actin and keratin both share with byssal threads a tendency to recover initial modulus and stress upon relaxation.
 -  Their skin is covered with non-overlapping scales composed of the protein keratin and often studded with bony plates called scutes.
 -  The slightly flattened spikes were covered with keratin, the same protein found in horns, fingernails, and claws.
 -  Androgens are also responsible for the increased growth in body hair and an increased shedding of keratin, a protein that can block pores and the flow of sebum.
 -  The structures had probably been covered with keratin, the same protein found in fingernails, horns, and claws.
 -  Cells are laced with a network of fibres more rigid than the rope-like structural proteins collagen and keratin.
 -  Each hair is made of tough and stretchable protein called keratin, manufactured by the hair follicle.
 -  Dermatophytes are fungi that can cause infections of the skin, hair and nails because of their ability to feed on keratin.
 -  Chemical constituents include keratin and eukeratin as well as other proteins, peptides and free amino acids.
 -  Baleen is made of keratin, the same protein that makes up hair and fingernails, and is strong, yet elastic.
 
 
 OriginMid 19th century: from Greek keras, kerat- 'horn' + -in1. rhinoceros from Late Middle English: It is the look of the rhinoceros that provides its name, which comes from Greek rhino- ‘nose’ and keras ‘horn’. The animal has been known in English since the end of the 14th century, but the first reference to it calls it a kind of unicorn. Rhino- will be familiar to gardeners from the antirrhinum (mid 16th century), the alternative name for the snapdragon, whose name means ‘counterfeiting a nose’ from its appearance, while keras appears in keratin (mid 19th century), the substance from which horn is made. 
    Definition of keratin in US English: keratinnounˈkɛrədənˈkerədən A fibrous protein forming the main structural constituent of hair, feathers, hoofs, claws, horns, etc. 角蛋白 Example sentencesExamples -  Androgens are also responsible for the increased growth in body hair and an increased shedding of keratin, a protein that can block pores and the flow of sebum.
 -  Cells are laced with a network of fibres more rigid than the rope-like structural proteins collagen and keratin.
 -  Baleen is made of keratin, the same protein that makes up hair and fingernails, and is strong, yet elastic.
 -  Animal hair fibers consist of a protein known as keratin.
 -  Hair is composed of non-living tissue, mostly of a fibrous protein known as keratin and is devoid of nerves.
 -  They are unable to grow in living tissues but instead can multiply in structures containing keratin.
 -  The mature nail is a plate of the protein keratin which is also present in hair and skin.
 -  Actin and keratin both share with byssal threads a tendency to recover initial modulus and stress upon relaxation.
 -  Their skin is covered with non-overlapping scales composed of the protein keratin and often studded with bony plates called scutes.
 -  Chemical constituents include keratin and eukeratin as well as other proteins, peptides and free amino acids.
 -  Amino acids are absorbed by the body to help build keratin, the main protein in hair.
 -  The structures had probably been covered with keratin, the same protein found in fingernails, horns, and claws.
 -  Cat claws are made of keratin, a protein also found in human nails.
 -  Mammalian hair, made of a protein called keratin, serves at least four functions.
 -  Each hair is made of tough and stretchable protein called keratin, manufactured by the hair follicle.
 -  Fungal infections usually affect the skin because they live off keratin, a protein that makes up skin, hair and nails.
 -  Dermatophytes are fungi that can cause infections of the skin, hair and nails because of their ability to feed on keratin.
 -  The slightly flattened spikes were covered with keratin, the same protein found in horns, fingernails, and claws.
 -  Your fingernails are composed of layers of keratin, a protein also found in hair and skin.
 -  Gecko spatulae are made of keratin, the protein in human hair.
 
 
 OriginMid 19th century: from Greek keras, kerat- ‘horn’ + -in.     |