(n.) A common American composite weed (Ambrosia artemisiaefolia) with finely divided leaves; hogweed.
Example Sentences:
(1) Using a large clinic population with adequate controls, significant correlation between ragweed, grass or tree pollen sensitivity and the dates of birth was not obtained.
(2) Twelve non-atopic and 27 atopic preschool children were studied to determine the effect of pertussis booster vaccination on cutaneous histamine sensitivity and IgE antibody response to the naturally-occurring ragweed aeroallergen.
(3) We particularly wished to analyze the impact of terbutaline on the late allergic reaction, but we found that terbutaline mixed with ragweed antigen does not affect either the immediate or late skin test reaction.
(4) This ratio was related significantly to symptom scores reported by patients during the ragweed season subsequent to immunotherapy.
(5) Thus, with the dosage used, the parenterally administered hyperimmune gamma globulin did not influence most measurements of ragweed hypersensitivity.
(6) Significant differences were also observed in symptom scores for individual weeks during the ragweed season.
(7) The stability of ragweed extracts as measured by Antigen E content is markedly enhanced with little loss after 15 month storage at 4 degrees C, when the extract is prepared as an alum precipitated suspension.
(8) The radioallergosorbent test was compared with currently accepted allergy diagnostic techniques in ragweed-sensitive and unselected patients.
(9) The first group was given immune sera (I) containing anti-ragweed IgE.
(10) To accomplish this, blood was obtained from patients with ragweed AR, granulocytes were isolated and fractionated by continuous density Percoll gradients, and the density distribution of these cells was determined after centrifugation.
(11) The 3 monoclonal antibodies studied recognized different components of timothy grass and 2 of them recognized kentucky june grass but none recognized components of ragweed extracts.
(12) Sixty ragweed-sensitive adults were randomized either to a course of four Pollinex-R hyposensitization injections during the 6 weeks before the ragweed-pollen season, or to budesonide aqueous nasal steroid spray, 400 micrograms daily, throughout the season.
(13) Furthermore, an additional 7 patients with ragweed-allergic rhinitis were studied prospectively while undergoing immunotherapy and Ab2 levels were found to increase with time posttreatment.
(14) We analyzed histamine, prostaglandin D2, IL-1, and leukocytes accumulating hourly for 12 hours at skin-chamber sites after local ragweed challenge in eight allergic subjects with cutaneous late-phase reactions.
(15) V (Ra5S), was isolated in ultrapure form from a 16-min extract of ragweed pollen by a combination of molecular sieving through an Amicon hollow fiber cartridge (H1P5), cation-exchange chromatography, and gel filtration.
(16) Previous work has demonstrated a close association between certain histocompatibility antigens and the gene that controls the IgE response to certain ragweed allergens.
(17) Astemizole (Hismanal; Janssen Pharmaceutica Inc., Mississauga, Ontario, Canada) and terfenadine (Seldane; Merrell Dow Pharmaceuticals [Canada], Inc., Concord, Ontario, Canada) were compared for clinical efficacy in a double-blind randomized trial during the ragweed pollen season.
(18) Seasonal changes in IgE antibodies and their relationship to IgG antibodies were studied in 52 patients with ragweed hay fever and 10 normal controls.
(19) In an attempt to differentiate between these two possible mechanisms, we obtained measurements of hemodynamics, respiratory mechanics, and O2 consumption (VO2) in nine asymptomatic adult ragweed asthmatics before and after inhalation challenge with either ragweed extract or methacholine.
(20) Total secretory IgA and specific anti-antigen E (AgE) antibodies (ab) in the IgA and IgG classes were measured in concentrated nasal washings from ragweed allergic and normal individuals by antigen binding or anti-alpha-radioimmunoassays.
Weed
Definition:
(n.) A garment; clothing; especially, an upper or outer garment.
(n.) An article of dress worn in token of grief; a mourning garment or badge; as, he wore a weed on his hat; especially, in the plural, mourning garb, as of a woman; as, a widow's weeds.
(n.) A sudden illness or relapse, often attended with fever, which attacks women in childbed.
(n.) Underbrush; low shrubs.
(n.) Any plant growing in cultivated ground to the injury of the crop or desired vegetation, or to the disfigurement of the place; an unsightly, useless, or injurious plant.
(n.) Fig.: Something unprofitable or troublesome; anything useless.
(n.) An animal unfit to breed from.
(n.) Tobacco, or a cigar.
(v. t.) To free from noxious plants; to clear of weeds; as, to weed corn or onions; to weed a garden.
(v. t.) To take away, as noxious plants; to remove, as something hurtful; to extirpate.
(v. t.) To free from anything hurtful or offensive.
(v. t.) To reject as unfit for breeding purposes.
Example Sentences:
(1) Careless Herbicidal aerial spray of a field for weed control and defoliation of cotton before machine picking, resulted in the contamination of an adjoining reservoir, killing large volume of fish.
(2) In lieu of crop rotation and biodiversity (the non-toxic way to control weeds), the MSU extension service promotes what the article calls a "diversified herbicide program".
(3) The condition has occurred for many years and has been thought to have been associated with ingestion of Crofton weed (Eupatorium adenophorum).
(4) There is, of course, a place for regulatory vigilance, for forcing entire institutions to clean up after themselves by paying hefty fines, and weeding out bad practices.
(5) In allergologic out-patient departments of Dubrovnik, Split, Sibenik, Zadar, Pula and Rijeka, 300 patients with pollinosis have been tested by the application of the prick method of group allergens of grass, tree and weed pollen, particularly of Parietariae (pellitory) pollen.
(6) The coalition claims that authorities were forcing teachers, businessmen and students to weed the fields or pick cotton or face fines of up to 1 million soum (about £210) for university students.
(7) Bob McCulloch, the St Louis County prosecutor who oversaw the state grand jury inquiry that looked into Brown’s death, insisted that discrimination by law enforcement was a rarity but said authorities must “weed it out”.
(8) Unions blame 70% fall in employment tribunal cases on fees Read more “The government originally said making people pay would weed out vexatious claims.
(9) He also promised Thatcher a new crackdown on immigrant male fiances, saying that he was thinking of "a kind of steeplechase designed to weed out south Asians in particular".
(10) The substances studied generally proved very active against the weeds tested and showed marked specificity of action towards Setaria and Echinochloa.
(11) We haven’t ascertained how much of the forests it has taken over, but a significant portion may in reality be unpalatable weeds and effectively unusable from an elephant’s perspective.
(12) In a statement on Wednesday , he said that he will criticise the Met for "the routine gathering and retention of information that was collateral, not linked to an operation or the prevention of crime and it should have been disposed of as part of a weeding process."
(13) But the matriarch of women who toke is Nancy Botwin ( Mary-Louise Parker ) in the long-running TV series Weeds .
(14) One of their number, James Howard Kunstler, blasted the High Line as "decadent" , "a weed-filled 1.5 mile-long stretch of abandoned elevated railroad", where "mistakes are artfully multiplied and layered", such as "the notion that buildings don't have to relate to the street-and-block grid ... instead of repairing the discontinuities of recent decades, we just celebrate them and make them worse".
(15) We have the know-how to track organisations that achieve the best results for patients, and weed out those that don't come up to scratch."
(16) After weeding, planting or harvesting, people attempt to make money.
(17) Animal Practice is a Universal Television production based on an irreverent New York veterinarian, played by Justin Kirk of Weeds and Angels in America.
(18) Some physicochemical properties of the mitochondrial DNAs (mtDNA) from plants of flax, broad bean and mung bean, and from tissue culture cells of jimson weed, soybean, petunia and tobacco were determined.
(19) Weed and water samples collected from river water abstraction points, reservoirs, tap water supplies, and animal water troughs fed from this supply all contained low levels of iodine-125.
(20) There has been a troubling several decade-long pattern of denial on the part of the seed patent holders over the likelihood of resistance emerging - for example Monsanto authors of a 1997 paper asserted weed resistance would never happen.