(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 acid it yields leucin and tyrosin, as does albumin. Called also epidermose.
Example Sentences:
(1) The observed staining indicated that the epithelium of the external auditory meatus has a pattern of keratin expression typical of epidermis in general and the epithelium of the middle ear resembles simple columnar epithelia.
(2) A new method of staining the keratin filament matrix allowing a visualization of the filaments in cross section of hair fibres has been developed.
(3) The positive reaction for keratin and vimentin confirmed the presence of ectodermal and mesodermal elements respectively in the tumor.
(4) The mean gain in width of keratinized gingiva averaged 3.15 mm.
(5) The histological changes by light and electron microscopy in these patients demonstrates the metaplastic changes of the basal cell of the mucosa differentiating into mucous and keratin cells.
(6) These particular keratins that were found among others in basal cells could also be detected to a variable extent in metaplastic and dysplastic cervical lesions.
(7) Chemically isolated separate preparations of the non-aggregating protein-chondroitin-keratin sulphate (PCKS) fraction from the hyaline cartilage and hyaluronic acid (HUA) of the vitreous body and of the umbilicus were investigated by electron microscopy.
(8) In benign lesions both keratins were present, while in malignant ones only keratin No.
(9) The diagnosis was defined by immunohistochemical methods, which showed a positivity for keratin in the cells lining spaces with a vascular appearance.
(10) All of the cell lines expressed keratin intermediate filaments and two showed weak co-expression of vimentin.
(11) The expression of keratin and differentiation markers was identical to that of normal keratinocytes, suggesting that psoriatic epidermal differentiation is not truncated in vitro as has been postulated to be the case in vivo.
(12) In seven out of eight patients, the urothelium adjacent to the squamous cell metaplasia was also positive for keratin, indicating a direct transformation of the urothelium to squamous cell epithelium.
(13) Carcinomas fail to express suprabasal cell keratins and this is regulated at the transcriptional level.
(14) Lactobacillus strains of numerous species isolated from several animal sources exhibited cellular hydrophobicities that differed from those expected on the basis of their abilities to colonize the keratinizing stratified squamous epithelium in the mouse stomach.
(15) Furthermore the presence of keratin 17 in a CIN I, II, or III lesion may indicate progressive potential while its absence could be indicative of a regressive behavior.
(16) We did not observe two distinct types of cells with different morphology or components which could be held responsible for the production of two different types of keratin as have been described in other animals, but rather a uniformity of cell structures in each layer and only the so-called "smooth" type of keratin.
(17) The present study compares different post-embedding staining methods, including conventional and low-temperature embedding techniques, for demonstration of the keratin and vimentin cytoskeleton of epidermal cells, applying commercially available polyclonal and monoclonal antibodies.
(18) All cases so examined had positive results for vimentin and negative results for keratin.
(19) We have examined the keratin proteins in normal human oral mucosa from 6 different regions including hard palate, buccal mucosa, tongue, gingiva and floor of the mouth.
(20) Expression of keratins of high molecular weight was reduced to small foci of keratinization and scattered dyskeratotic cells.
Nail
Definition:
(n.) the horny scale of plate of epidermis at the end of the fingers and toes of man and many apes.
(n.) The basal thickened portion of the anterior wings of certain hemiptera.
(n.) The terminal horny plate on the beak of ducks, and other allied birds.
(n.) A slender, pointed piece of metal, usually with a head, used for fastening pieces of wood or other material together, by being driven into or through them.
(a.) A measure of length, being two inches and a quarter, or the sixteenth of a yard.
(n.) To fasten with a nail or nails; to close up or secure by means of nails; as, to nail boards to the beams.
(n.) To stud or boss with nails, or as with nails.
(n.) To fasten, as with a nail; to bind or hold, as to a bargain or to acquiescence in an argument or assertion; hence, to catch; to trap.
(n.) To spike, as a cannon.
Example Sentences:
(1) Since fingernail creatinine (Ncr) reflects serum creatinine (Scr) at the time of nail formation, it has been suggested that Ncr level might represent that of Scr around 4 months previously.
(2) This article describes a number of syndromes affecting the nail unit.
(3) Ender nails as well as three forms of interlocking nails, Brooker-Wills (B-W), Klenm-Schellman (K-S), and Grosse-Kempf (G-K), were implanted in cadaver femora.
(4) In the end, the emails from citizen scientists nailed the timing: “looks like it started maybe December 2015”; the severity: “I’ve seen dieback before, but not like this”; and the cause: “guessing it may be the consequence of the four-year drought”.
(5) Impairments of hearing, of mobility, of cutting toe-nails and of general physical activity were the conditions which were most frequently named.
(6) All nine injuries had antibiotic prophylaxis before and after nail removal.
(7) But I'm starting with the job that I can do something about right now – scrabbling around on the floor, picking up three-inch nails and cigarette butts so that the new four-year-olds will have somewhere safe to play at break.
(8) A case is reported of a male infant with congenital palmoplantar keratoderma and nail dystrophy who developed progressive perioral and perineal keratoderma.
(9) Although the nail changes and systemic complications are probably due to different causes in drug-induced YNS, a careful search for systemic complications are necessary in patients who develop nail changes.
(10) Similar cultures from ten additional patients who underwent nail surgery were also performed.
(11) It constitutes an alternative to Ender nailing, screw-plate, and nail-plate.
(12) Fragments of nail keratin removed with tweezers from patients suffering from alopecia areata were examined using light microscopy and electron microscopy.
(13) It's an anxious time for those 180,000 teenagers chasing the last university places in clearing ; nails are bitten to the quick, eyes glazed from internet searching.
(14) The phenol and alcohol procedure still remains as one of the most effective and gratifying means of treatment for symptomatic ingrown nails.
(15) High level of Ge content was detected from the hair and nail by inductively coupled plasma atomic emission spectrometry.
(16) Yellow nail syndrome is characterized by a yellow discolouration of the nails associated with idiopathic lymphoedema and pleuropulmonary manifestations.
(17) I drive past buildings that I know, or assume, to house bedsits, their stucco peeling like eczema, their window frames rattling like old bones, and I cannot help myself from picturing the scene within: a dubious pot on an equally dubious single ring, the female in charge of it half-heartedly stirring its contents at the same time as she files her nails, reads an old Vogue, or chats to some distant parent on the telephone.
(18) Median strain values of reamed only and polyacetal-nailed femora ranged from 67 to 90 percent of the intact side.
(19) Harry Reid and Mitch McConnell, the Senate majority and minority leaders, held two lengthy meetings on Monday in an attempt to nail down terms of a possible compromise.
(20) One hundred patients were treated with the Rydell four-flanged nail and 100 with the Gouffon pins.