(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.
Peak
Definition:
(n.) A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap.
(n.) The top, or one of the tops, of a hill, mountain, or range, ending in a point; often, the whole hill or mountain, esp. when isolated; as, the Peak of Teneriffe.
(n.) The upper aftermost corner of a fore-and-aft sail; -- used in many combinations; as, peak-halyards, peak-brails, etc.
(n.) The narrow part of a vessel's bow, or the hold within it.
(n.) The extremity of an anchor fluke; the bill.
(v. i.) To rise or extend into a peak or point; to form, or appear as, a peak.
(v. i.) To acquire sharpness of figure or features; hence, to look thin or sicky.
(v. i.) To pry; to peep slyly.
(v. t.) To raise to a position perpendicular, or more nearly so; as, to peak oars, to hold them upright; to peak a gaff or yard, to set it nearer the perpendicular.
Example Sentences:
(1) The coefficient of variation in the integrated area of a single peak is 16%.
(2) Here we show that this induction of AP-2 mRNA is at the level of transcription and is transient, reaching a peak 48-72 hr after the addition of RA and declining thereafter, even in the continuous presence of RA.
(3) Amino acid sequence analysis showed that both peaks had identical N-terminal sequences through the first 28 residues.
(4) These observations were confirmed by the killing curves in pooled serum obtained at peak and trough levels.
(5) The peak molecular weight never reached that of a complete 2:1 complex.
(6) Peak Expiratory Flow and Forced Expiratory Mean Flows in the ranges 0-25%, 25-50% and 50-75% of Forced Vital Capacity were significantly reduced in animals exposed to gasoline exhaust fumes, whereas the group exposed to ethanol exhaust fumes did not differ from the control group.
(7) We’re learning to store peak power in all kinds of ways: a California auction for new power supply was won by a company that uses extra solar energy to freeze ice, which then melts during the day to supply power.
(8) No significant correlations of peak VO2 were observed between the 3 tests.
(9) Peaks in the sperm index were preceded by 6 days with peaks in the serum testosterone concentration.
(10) Peak incidence is found among 40 to 49-year-old and 60 to 64-year-old women.
(11) The remainder of the radioactivity appeared chromatographically just prior to the bisantrene peak, indicating that compounds more polar than the parent were present as transformation products.
(12) The curve of mitoses peaked at the same time as that of TK activity but was only 68% as extensive.
(13) We conclude that the rat somatosympathetic reflex consists of an early excitatory component due to the early activation of RVL-spinal sympathoexcitatory neurons with rapidly conducting axons and a later peak that may arise from the late activation of these same neurons as well as the early activation of RVL vasomotor neurons with more slowly conducting spinal axons.
(14) The ACTH deficiency recovered spontaneously, with normal cortisol responses to depot Synacthen (greater than 1380 at 6 h) and hypoglycemia (peak, 590) 14 and 18 months postpartum, respectively.
(15) No relationship was found with the absolute value of either peak or area GH.
(16) GnRH infusion produced an immediate increase in plasma LH concentrations in the mares that ovulated during the infusion period and LH levels peaked at the time of ovulation.
(17) In guinea pig ventricular myocytes, the positive contractile staircase was associated with ascending staircases of both peak systolic and end diastolic [Ca2+]i because of a cumulative increase in diastolic [Ca2+]i.
(18) A considerably greater increase in the peak plasma OT concentration resulted when hungry foster litters of 6 pups were suckled after the mothers' own 6 pups had been suckled.
(19) The incidence was 0.31 per 1000 gynaecological admissions and the peak age incidence was in the age group 26 to 35 years.
(20) A relative net reduction of 47% in lactose malabsorption was produced by adding food, and the peak-rise in breath H2 was delayed by 2 hours.