(n.) A tuft, or other excrescence or natural ornament, growing on an animal's head; the comb of a cock; the swelling on the head of a serpent; the lengthened feathers of the crown or nape of bird, etc.
(n.) The plume of feathers, or other decoration, worn on a helmet; the distinctive ornament of a helmet, indicating the rank of the wearer; hence, also, the helmet.
(n.) A bearing worn, not upon the shield, but usually above it, or separately as an ornament for plate, liveries, and the like. It is a relic of the ancient cognizance. See Cognizance, 4.
(n.) The upper curve of a horse's neck.
(n.) The ridge or top of a wave.
(n.) The summit of a hill or mountain ridge.
(n.) The helm or head, as typical of a high spirit; pride; courage.
(n.) The ornamental finishing which surmounts the ridge of a roof, canopy, etc.
(n.) The top line of a slope or embankment.
(v. t.) To furnish with, or surmount as, a crest; to serve as a crest for.
(v. t.) To mark with lines or streaks, like, or regarded as like, waving plumes.
(v. i.) To form a crest.
Example Sentences:
(1) Hence, the absence of NGF receptors on premigratory neural crest and early migratory neural crest cultures was not due to enzymatic alterations of the receptor.
(2) Predominantly observed defects included neural crest cells in ectopic locations, both within and external to the neural tube, and mildly deformed neural tubes containing some dissociating cells.
(3) Our results suggest that cAMP may be an important regulator of phenotypic expression in at least some neural crest cell lineages.
(4) Neural crest cells give rise to various essential tissues in vertebrates.
(5) In the present study, we have compared the phosphorylation state of the fibronectin receptor in motile neural crest and somitic cells, in stationary somitic cells, and in Rous-sarcoma virus transformed-chick embryo fibroblasts, using immunoprecipitation following metabolic labeling.
(6) The staining method consisted of sequential treatment of slides with crest serum, fluorosceinated goat-antihuman and swine-antigoat antibodies, and propidium iodide.
(7) The participation of neural crest cells in development of the dermal skeleton is discussed by way of the repartition of the odontods within the pectoral fin.
(8) The talus was revascularized with a vascularized corticocancellous iliac crest bone graft.
(9) When the method proposed by Trela (1975) is applied, thin layers of the petrous crest are chiselled out until the common crus of the superior and posterior semi-circular becomes apparent.
(10) The center of resistance was located at 0.24 times the root length measured apical to the level of alveolar crest.
(11) By means of immunoreactivity for spot 35 protein, a novel cerebellar Purkinje cell-specific protein, the regional heterogeneity among non-pigmented ciliary epithelial cells of rats was demonstrated with reference to the antero-posterior and crest-valley directions of individual ciliary epithelial folds in immature and mature eyes.
(12) This is done by scoring the septal cartilage in its basal attachment to the maxillary crest, providing a "swinging door" which can be sutured finally as desired.
(13) The type II, III, IV, and V boutons appear mature at all ages examined but crest synapses formed by the type III terminals are observed in the later stages of the study.
(14) The use of the pectoralis major muscle only flap in conjunction with a free iliac crest bone graft for reconstruction of the mandible is described.
(15) The outer coat turned to be extremely sculptured, presenting as interlaced crests of various height.
(16) The effects of AAGTP are different in nervous tissue from other tissues, and experiments with that nucleotide have led to the discovery of a new, 32 kDa GTP-binding protein which appears only in neural crest cells.
(17) The neural crest has been suggested as the origin of the ectomesenchymomas.
(18) He had huge eyes, a wide, deep brow, an angel's mouth, with the upper lip crested.
(19) We have examined the distribution and function of the defined cell adhesion molecules, N-cadherin and N-CAM, in the emigration of cranial neural crest cells from the neural tube in vivo.
(20) On E7, a slender neuropil was present in the migrating cell clusters, but all the crest derived cells were uniform.
Watershed
Definition:
(n.) The whole region or extent of country which contributes to the supply of a river or lake.
(n.) The line of division between two adjacent rivers or lakes with respect to the flow of water by natural channels into them; the natural boundary of a basin.
Example Sentences:
(1) Anterior borderzone brachial paralysis (ABBP) is a hemodynamic ischemic syndrome of the watershed zone between the anterior and middle cerebral arteries.
(2) Expect growing localised tensions around specific watersheds between one ethnic group and another, between farmers and cities, and so forth, he warns: “Rather than India versus Pakistan, it’s Karnataka versus Tamil Nadu over the allocation of a river that is shared between those two states.” The Water Stress Index , produced by UK risk analysis firm Maplecroft, provides an indication where water-related conflicts might be most likely to occur.
(3) The issue was first raised by BBC2 controller Janice Hadlow and brought to the attention of the then BBC Vision director Jana Bennett – number two to BBC director general Mark Thompson – after the sitcom, which was planned for a post-9pm watershed slot, was moved to pre-watershed.
(4) Consequently, the insular ribbon effectively becomes a watershed arterial zone.
(5) But campaign groups are now convinced that they have lost the battle on the pre-watershed ban.
(6) Cerebral watershed infarctions usually occur after a period of acute and severe systemic hypotension resulting in a distinctive clinical picture.
(7) Monthly mean concentrations of dieldrin in river water and most aquatic organisms were highest in June and July, soon after aldrin had been applied to corn land in the watershed.
(8) It marked a watershed in public perceptions of Brown, and represents the biggest unforced political error in the history of New Labour.
(9) Pardew's antics will generate yet more negative headlines for a club never far from controversy for one reason or another, and the manager admits that the episode may well be a personal watershed.
(10) Last month, public discontent spilled over for the first time when Putin was booed during an appearance at a martial arts fight , an event described by analysts as a watershed moment in his rule.
(11) The oxygen extraction fraction rose with the distance from the anterior portion of the circle of Willis, attaining the highest value in the superior parietal and posterior temporo-occipital watershed area.
(12) Tc-99m HMPAO SPECT may be more sensitive than CT in the detection of infarctions in the watershed distribution.
(13) Lee Hsien Loong acknowledged that was a watershed, promising to listen to voters.
(14) In 1819, the area of Manchester then known as St Peter's Field was the scene of a watershed moment in the struggle for universal suffrage, when around 15 protesters were variously bayoneted, shot and trampled to death in the so-called Peterloo Massacre .
(15) Swine faeces from three pig farms in the La Crosse River watershed near La Crosse, Wisconsin, were sampled for Yersinia enterocolitica; 19 presumptive isolates were recovered and biochemically confirmed as Y. enterocolitica.
(16) If that happens, the Britain that votes to join the anti-Isis alliance will have crossed a post-Iraq watershed.
(17) The lesions were thought to be in the watershed areas of the regional arterial supplies, and the areas were considered to be prone to ischemia.
(18) The position of the watershed zone could be important to explain the visual field defect in anterior ischemic optic neuropathy and glaucoma.
(19) Only a few deep infarctions were watershed infarction possibly.
(20) Watershed cerebral infarcts can now be identified in stroke survivors using CT scanning.