(v. i.) To drop the head or person suddenly; to bow.
(n.) A pet; a darling.
(n.) A linen (or sometimes cotton) fabric, finer and lighter than canvas, -- used for the lighter sails of vessels, the sacking of beds, and sometimes for men's clothing.
(n.) The light clothes worn by sailors in hot climates.
(v. t.) To thrust or plunge under water or other liquid and suddenly withdraw.
(v. t.) To plunge the head of under water, immediately withdrawing it; as, duck the boy.
(v. t.) To bow; to bob down; to move quickly with a downward motion.
(v. i.) To go under the surface of water and immediately reappear; to dive; to plunge the head in water or other liquid; to dip.
(v. t.) Any bird of the subfamily Anatinae, family Anatidae.
(v. t.) A sudden inclination of the bead or dropping of the person, resembling the motion of a duck in water.
Example Sentences:
(1) The move was confirmed by a Lib Dem aide, who said Tory claims to be green were "already a lame duck and are now dead in the water".
(2) The temperature of the anterior and middle hypothalamus of conscious Pekin ducks was altered with chronically implanted thermodes.
(3) Previous studies in the rat, mouse and duck had suggested that agents present in cigarette smoke might induce a cytochrome P450-mediated detoxication pathway, leading to protection against aflatoxin-induced primary liver cancer.
(4) Prolactin plasma concentrations decreased rapidly at the end of incubation in ducks which successfully hatched young as well as in unsuccessful incubators.
(5) From ducks A. laidlawii, M. anatis and various unclassified strains were isolated, among these M. anatis and unclassified arginine splitting mycoplasma strains proved to be pathogenic.
(6) The early phases of hepadnaviral infection were studied in primary duck hepatocyte cultures.
(7) In intact ducks changes in blood flow were recorded as changes in digital subcutaneous tissue temperature.
(8) But on Sunday night it was hard to duck the euphoria.
(9) In the Commons on Monday , John Whittingdale, the culture secretary who only in February chaired the committee that concluded “No future licence fee negotiations must be conducted in the way of the 2010 settlement”, ducked the invitation to explain how exactly the same thing had just happened again.
(10) He was never an intellectual; at Oxford, he did no work, and was proudest of playing squash and cricket for the university, though against Cambridge at Lord's he failed to take a wicket and made a duck.
(11) Adult mallard ducks fed 0, 2, 20, or 200 ppm of cadmium chloride in the diet were sacrificed at 30-day intervals and tissues were analyzed for cadmium.
(12) Typical herpesviral capsids and virions were seen in negatively-stained preparations of duck embryo fibroblasts.
(13) To study the effect of air sac pressures, a controllable pressure difference was produced between the air sac orifices of fixed duck lungs.
(14) Images of dead ducks in oil sands tailings pond have been plastered on billboards in Denver, Portland, Seattle and Minneapolis.
(15) You cannot now duck the fact that we have an electoral system which is completely out of step with the aspirations and hopes of millions of British people," he said.
(16) Three Newcastle disease viruses (NDV) isolated from wild ducks in Japan were evaluated for their biological activities, pathogenicity and immunogenicity against one-day-old chickens.
(17) With these synthetic peptides, radioimmunoassay systems for dog, rat, and duck C-peptides were developed.
(18) On the basis of the antiviral action of sulfated polyanions in human immunodeficiency virus and other viral infections, we studied the effect of dextran sulfate and heparin on duck hepatitis B virus infection.
(19) The (Na+ plus K+)-ATPase activities in salt gland homogenates increased 3- to 4-fold after saline treatment of ducks for 3 weeks.
(20) Compared with intact ducks, neither decerebration nor brain stem transection at the rostral mesencephalic (RM) level had any effect on development of diving bradycardia, or heart rate at the end of two-min dives.
Hamster
Definition:
(n.) A small European rodent (Cricetus frumentarius). It is remarkable for having a pouch on each side of the jaw, under the skin, and for its migrations.
Example Sentences:
(1) The microsomal preparations from untreated Syrian golden hamster livers exhibited higher activities of N-demethylation towards the macrolide antibiotics, erythromycin and troleandomycin, than those from untreated and phenobarbital-treated rats.
(2) Because cystine in medium was converted rapidly to cysteine and cysteinyl-NAC in the presence of NAC and given that cysteine has a higher affinity for uptake by EC than cystine, we conclude that the enhanced uptake of radioactivity was in the form of cysteine and at least part of the stimulatory effect of NAC on EC glutathione was due to a formation of cysteine by a mixed disulfide reaction of NAC with cystine similar to that previously reported for Chinese hamster ovarian cells (R. D. Issels et al.
(3) Although Jeggo's Chinese hamster ovary cells were more responsive to mAMSA, novo still abrogated mAMSA toxicity in the mutant cells as well as in the parental Chinese hamster ovary cells 2,4-Dinitrophenol acted similarly to novo with respect to mAMSA killing, but neither compound reduced the ATP content of V79 cells.
(4) The amino acid pools in Chinese hamster lung V79 cells were measured as a function of time during hyperthermic exposure at 40.5 degrees and 45.0 degrees C. Sixteen of the 20 protein amino acids were present in sufficient quantity to measure accurately.
(5) Both treatments depressed nocturnal pineal melatonin content in rats and hamsters.
(6) Stimulation of dopamine D2 receptors potentiates Ca2+ ionophore- or ATP-induced arachidonic acid (AA) release in D2 receptor cDNA-transfected Chinese hamster ovary (CHO) cells [CHO(D2)].
(7) Its metabolism was studied in the hamster in comparison with sodium 3 alpha, 7 alpha-dihydroxy-24-nor-5 beta-cholane-23-sulfonate and sodium taurochenodeoxycholate.
(8) In the first experiment ovariectomized female hamsters were administered varying dosages of progesterone (P), dihydrotestosterone (DHT) or CI-628 at the same time (concurrently) as estrogen (EB) or 48 hr after EB (sequentially).
(9) When an expression vector containing plasminogen cDNA is transfected into baby hamster kidney cells, the number of drug-resistant colonies as well as the levels of plasminogen secreted by those colonies is lower than observed in similar transfections of other protease precursor genes.
(10) These findings suggest that in hamsters (i) A and B antigens are tumor-related antigens; (ii) H, Le(b), Le(x) and Le(y) are oncofetal antigens; and (iii) fucosylation is an important event in cell differentiation.
(11) Cell recovery data for the hamster, rat, guinea pig, and rabbit were related to body size with the hamster having the lowest count and the rabbit the highest count.
(12) Fertilization of golden hamster eggs was blocked both in vitro and in vivo by antibodies produced in rabbits against specific hamster ovarian antigens (HOA).
(13) Chromosome aberrations were scored in BHK21 C13 Syrian hamster fibroblasts, exposed to 60Co gamma-rays, 250 kV X-rays, 15 MeV neutrons or neutrons of mean energy 2.1 MeV produced from the 9Be(d,n)10B reaction.
(14) After approximately 20 in vitro passages, Chinese hamster kidney (CHK) cell cultures transformed upon exposure to different strains of SV 40 can show a diploid modal chromosome number of 22 with chromosome counts exclusively or essentially in the diploid range (20-25).
(15) Stable mutants which are between 1.6- and 2.2-fold resistant to the microtubule inhibitor, nocodazole (NocR mutants) have been isolated in Chinese hamster ovary cells after a single-step selection.
(16) In the terminal segment of the hamster epididymidis there was some evidence of micro-merocrine protein secretion a the level of the principal cells and clear evidence of granular secretion in the light cells, presumable of glycoproteins.
(17) It was previously demonstrated that multidrug-resistant Chinese hamster cell lines contain an amplified, transcriptionally active DNA sequence designated mdr.
(18) Malignant melanoma of the conjunctival region was induced in the golden Syrian hamster.
(19) Furthermore, the animals did not increase their intake of sunflower seeds, a preferred diet for hamsters.
(20) Cheek pouches were removed from BIO 87.20 male hamsters 4 weeks, 8 months or 18 months of age.