(n.) A South American rodent (Myopotamus coypus), allied to the beaver. It produces a valuable fur called nutria.
Example Sentences:
(1) The results obtained in experiments with natural mating revealed that the extirpation of male coypu seminal vesicles did not affect their fertility.
(2) In spite of a large number of amino acid substitutions (relative to mammalian insulins), computer-graphics model-building studies suggest a similar spatial arrangement for coypu insulin to that for pig insulin.
(3) This appears to be the first report of the isolation of leptospira from a coypu in Great Britain.
(4) There was no cross reaction between guinea pig PBP and PBP of other pregnant hystricomorphs (viscacha, degu, and coypu).
(5) Twenty-nine coypu were trapped and examined by serological, histological and cultural methods.
(6) Minimal thermal conductance was 0.10 W.kg-1.degree C-1 in air for Ta between -10 and +20 degrees C, and conductance varied in water from 0.24 to 1.18 W.kg-1.degrees C-1 for Ta between 5 and 35 degrees C. The physiological adaptations to cold and particularly the high insulative value of the fur (80-90% of the insulation) help to explain the successful extension of the coypu's range to temperate regions.
(7) Coypu pancreas contains one carbohydrate-containing ribonuclease component.
(8) In total 47 foetuses were found post mortem in ten coypu females covered by surgically treated males, which on average represented 4.7 foetuses per female.
(9) The occurrence of the papillomatous disease of the coypu having a contagious character was recorded for the first time in Czechoslovakia in 1975.
(10) Compositions of the carbohydrate moieties of ribonucleases from cow, sheep, pig, whales, giraffe, okapi, moose, horse, coypu, chinchilla, and guinea-pig are presented.
(11) The receptor-binding affinity is significantly higher (5-8%) in rat fat-cells, in rat liver plasma membranes and in pig liver cells, indicating that the efficacy of coypu insulin on receptors is about 2-fold lower than that of pig insulin.
(12) Pancreatic ribonucleases from the hystricomorph rodent species: coypu and chinchilla were isolated using chromatography on carboxymethyl-cellulose.
(13) 89 streptococci strains originated from pigs, 40 strains from horses, 13 from cattle, 12 from dogs, 9 from poultry and 8 from coypu.
(14) In addition, studies in vitro show that DB3 can effectively bind to progesterone carried by high-affinity progesterone-binding protein purified from coypu plasma.
(15) This suggested that New World monkeys, like the New World hystricomorph rodents such as the guinea pig and the coypu, might have insulins whose sequences differ markedly from those of Old World mammals.
(16) Insulin from a hystricomorph rodent, coypu (Myocaster coypus), was isolated and purified to near homogeneity.
(17) The days of the South American coypu in Italy and northern Spain could also be numbered.
(18) These observations have verified in other ruminant species, as the moufflon and the buffalo, the validity of the above-named datum and have ascertained that it is always inconstant in the other animal species considered (wild boar, coypu).
(19) Based on the amino acid composition of globin, amino acid analysis and N-terminal sequencing of peptides as well as a comparative analysis of the primary structure of beaver, coypu rat and otter myoglobins with the use of the fingerprinting technique, the amino acid sequence of the major component of ondatra myoglobin including 153 amino acid residues was reconstructed.
(20) The following order of animal sera was defined in comparison to human sera: cattle, pigeon, duck, sheep, cat, turkey, swine, coypu, hen, dog.
Rodent
Definition:
(v. t.) Gnawing; biting; corroding; (Med.) applied to a destructive variety of cancer or ulcer.
(v. t.) Gnawing.
(v. t.) Of or pertaining to the Rodentia.
(n.) One of the Rodentia.
Example Sentences:
(1) Intoxicating concentrations of ethanol also inhibit excitatory synaptic transmission mediated by N-methyl-D-aspartate receptors in hippocampal slices from adult rodents.
(2) This is the first clear example of activation of the K-ras gene by ethylating agents in a rodent lung tumor system.
(3) The relatively high incidence of nephroblastoma in the Nb rat using transplacentally administered ENU appears to represent a suitable basis for developing a rodent model of human nephroblastoma or Wilms' tumor.
(4) Male Sprague Dawley rats either trained (T, N = 9) for 11 wk on a rodent treadmill, remained sedentary, and were fed ad libitum (S, N = 8) or remained sedentary and were food restricted (pair fed, PF, N = 8) so that final body weights were similar to T. After training, T had significantly higher red gastrocnemius muscle citrate synthase activity compared with S and PF.
(5) This model of protective immunity in a Brugia-susceptible small rodent may provide a useful system for identification of molecularly defined filarial-protective immunogens.
(6) The receptor pattern observed in tumors does not support the hypothesis previously raised in the case of chemically induced colonic tumors in rodents.
(7) It is concluded that these rodent studies do not implicate any specific inhalational anesthetic agent in fetal toxicity, and that the effects of additional factors, such as stress, must be considered.
(8) In the course of routinely performed subchronic toxicity studies with laboratory rodents, functional neurotoxicity, i.e.
(9) Particularly striking is the distribution of CpG dinucleotides within human and rodent APRT genes.
(10) There was less of an increase following a blood meal infected with the rodent malaria parasite, Plasmodium berghei.
(11) An analysis of 54 protein sequences from humans and rodents (mice or rats), with the chicken as an outgroup, indicates that, from the common ancestor of primates and rodents, 35 of the proteins have evolved faster in the lineage to mouse or rat (rodent lineage) whereas only 12 proteins have evolved faster in the lineage to humans (human lineage).
(12) The differences in immunoreactivity between rodent and human amyloid plaques are consistent with other findings showing that cellular genes, not infectious purified prions, encode PrP.
(13) These products, as well as several synthetic intermediates, were evaluated for antifilarial activity against Molinema dessetae either in vivo in its natural host, the rodent Proechimys oris, or in vitro by a new test using cultures of the infective larvae.
(14) An increased neuronal activity was obtained by exercising the rats in a commercial rodent treadmill a couple of hours per day for 14 days.
(15) In a series of experiments we found that 1) growth rates of hamsters offered the Lyric diet alone or in conjunction with the standard rodent diet exceeded those of hamsters offered only the standard rodent diet.
(16) A model system of exfoliated normal human cervicovaginal squamous cells, exfoliated rodent tumor cells, and acellular, viscous, mucuslike material was used to investigate cell deposition on smear preparations made with three different instruments: plastic spatulas, wooden spatulas, and brush-tipped collectors.
(17) With repeated administrations, rodents become increasingly sensitive to the stimulant properties of amphetamine, a phenomenon termed sensitization.
(18) Although the overall rate of thymidine incorporation was lower than that for rodent cells, human hepatocytes were sensitive to lower concentrations of these growth factors, and the degree of stimulation was similar.
(19) Daily cocaine injection into rodents produces a progressive increase in the motor stimulant effect of acute cocaine administration.
(20) Since PEG-1000 treatment of HPRT- Chinese hamster cells in the absence of human cells yielded no HPRT+ cells, it is concluded that the element responsible for the restoration of rodent HPRT was contributed by the human cells and not by the agent employed to promote fusion.