(n.) Any Old Word rodent of the genus Hystrix, having the back covered with long, sharp, erectile spines or quills, sometimes a foot long. The common species of Europe and Asia (Hystrix cristata) is the best known.
(n.) Any species of Erethizon and related genera, native of America. They are related to the true porcupines, but have shorter spines, and are arboreal in their habits. The Canada porcupine (Erethizon dorsatus) is a well known species.
Example Sentences:
(1) It is apparent that seasonal acclimatization of the Cape porcupine is also reflected by these parameters.
(2) The parasites in these and eight cases previously reported from the northern United States and Canada are classified as resembling Dirofilaria ursi, a primarily subcutaneous parasite of bears, or D. subdermata of porcupines, in the same region.
(3) Overall minimal thermal conductance was calculated for newborn and paired adult porcupines.
(4) Trypanosoma cruzi-like parasites were found in 13 different species, and were particularly common in a variety of marsupials (Didelphidae), porcupines (Coendou spp.
(5) The woodchuck had a higher threshold and significantly smaller slope to its CO2 ventilatory response compared to the porcupine, but showed no difference in its hypoxic ventilatory response.
(6) It is suggested therefore that the Caviomorpha (guinea pig-like rodents) and possibly the Hystricomorpha (porcupine-like rodents) should be elevated in taxonomic rank and conferred an ordinal status distinct from the Rodentia.
(7) Aureobasidium pullulans was repeatedly isolated from a cutaneous infection of a porcupine (Erethizon dorsatum).
(8) The Quill Location: Southwark | Floors: 31 | Height: 109m | Architect: SPARRC | Status: approved | Use: student accommodation The Quill What would a building look like if it had a fight with a gigantic porcupine, and the porcupine won?
(9) The results indicate that plasma progesterone-binding proteins in Cape porcupines (Old World hystricomorph) are similar in composition to those in guinea-pigs (New World hystricomorph).
(10) The reproductive tract of the male Cape porcupine is morphologically and histologically similar to that of New World hystricomorph rodents.
(11) The constituent cell types of the ovary of the porcupine were similar to those of New World hystricomorph rodents and accessory corpora lutea and luteal bodies were formed through the luteinization of the membrana granulosa or theca interna of antral follicles.
(12) The woodchuck P50 of 27.8 was hardly different from the porcupine value of 30.7, but the Bohr factor, -0.72, was greater than the porcupine's, -0.413.
(13) This is the first report of notoedric acariasis in the porcupine.
(14) Sled dogs from five native villages on the range of the Artic caribou herd, but not from two villages on the the range of the Porcupine caribou herd, are commonly infected.
(15) Methods used to produce wounds included insertion of porcupine quills, application of constrictive rubber bands, mascara injections and excoriation of healing wounds.
(16) Mass-specific food and water intake of control and lactating porcupines was examined throughout the 68-78 days of lactation.
(17) Sexually mature female Cape porcupines kept under natural conditions of illumination and temperature did not conceive while housed within their natal groups.
(18) The reproductive pattern of porcupines is associated with low juvenile mortality and long adult lifespan (both of which reflect the porcupine's protective morphology), and may be related to the quality of winter diets.
(19) Six of 16 porcupines (Erethizon dorsatum) live-trapped in Sullivan County, Pennsylvania were infested with the mite Notoedres douglasi.
(20) To assess the effect of huddling, these parameters were also measured in adult pairs of porcupines (Ta = 15 and 25 degrees C) kept together in the metabolic chamber and the values were compared with those obtained from single porcupines.
Tricycle
Definition:
(n.) A three-wheeled velocipede. See Illust. under Velocipede. Cf. Bicycle.
Example Sentences:
(1) Accidentally discovered nearly 40 years ago as the first true antidepressants, the MAOIs soon fell into disfavor due to concerns about toxicity and seemingly lesser efficacy compared with the newer tricyclic compounds.
(2) The results prove the efficacy of the drug in all the examined patients, along with the rapidity of effects in comparison with the tricyclic antidepressants.
(3) After application of tricyclic antidepressant a larger increase in pulmonary arterial enddiastolic pressure was observed during ergometric exercise.
(4) Tricyclic antidepressants are often associated with adverse drug reactions in the elderly, so alternatives such as MAO inhibitors, alprazolam, bupropion and psychostimulants are currently being explored in this patient population.
(5) It appears that tricyclic antidepressants act in a fashion different from opiate drugs that alter the sensory discriminative component of pain.
(6) Effects of both tricyclic and non-tricyclic drugs on the extrinsic Cotton effects of dicumarol bound to human alpha 1-acid glycoprotein (AGP) have been investigated.
(7) It is concluded that the NA potentiation by tricyclic antidepressants is not the main reason for their cardiotoxic effects.
(8) As a basis for the discussion a possible structure for the DNA complex of the phenylated neutral red is considered in which the extra phenyl ring at N-5 of the phenazinium system, protrudes into the large groove of the DNA helix while the tricyclic part of the ligand is inserted between the DNA base-pairs.
(9) Because new drugs, which are really "defibrillating" drugs, are available (bretylium tosylate, bethanidine, clofilium, tricyclic antidepressants, phenotiazine derivatives), we plan to investigate these defibrillating drugs in isolated hearts, found in suitable animals like dogs (sheep and swine are difficult to defibrillate) and in humans during routine electropharmacological studies.
(10) The MAOIs represent effective alternatives to the tricyclic antidepressants.
(11) All three antagonists are composed of a very similar tricyclic ring system linked to a 1-methyl-4-piperidylene ring.
(12) The effects of a series of tricyclic and non-tricyclic antidepressants on the transport of [3H]-serotonin into synaptosomal fractions from rat brain in vitro and in vivo are summarized.
(13) Uptake of [123I]MIBG into the heart was inhibited by the tricyclic drug, imipramine, and this agent also accelerated the rate of loss of [123I]MIBG.
(14) Awareness of these factors is necessary to insure proper therapeutic utilization of the tricyclics as well as to treat effectively their toxicity.
(15) Research on plasma levels of tricyclic antidepressants suggest new clinical strategies for adjusting dosages; neurochemical studies may provide an appropriate selection process for choosing a tricyclic antidepressant.
(16) The tricyclic psychotropic drug opipramol (Insidon) reacts in vitro with sodium nitrite in acidic solution to form products including mutagens for Salmonella typhimurium TA98 and TA100.
(17) This clinical trial of a new antidepressant, fluoxetine, shows it to be as effective as a standard tricyclic drug, imipramine.
(18) Contrary to our previous study, no significant correlation was obtained between the plasma concentrations of amitriptyline, nortriptyline or total tricyclics with Hamilton rating score at 6 weeks or percentage improvement after 6 weeks treatment.
(19) The effect of low doses of antidepressants (almost always a tricyclic) appeared to be less beneficial than either higher doses or clinical management without antidepressant drugs.
(20) The fractions containing congeners with two to four ortho chlorines and the di- and tricyclic compounds had no significant effects on tissue vitamin A contents.