(n.) A tree of several species, constituting the genus Betula; as, the white or common birch (B. alba) (also called silver birch and lady birch); the dwarf birch (B. glandulosa); the paper or canoe birch (B. papyracea); the yellow birch (B. lutea); the black or cherry birch (B. lenta).
(n.) The wood or timber of the birch.
(n.) A birch twig or birch twigs, used for flogging.
(n.) A birch-bark canoe.
(a.) Of or pertaining to the birch; birchen.
(v. t.) To whip with a birch rod or twig; to flog.
Example Sentences:
(1) Sixty patients with seasonal allergic rhinitis due to birch pollen were enrolled in an open, randomized parallel group study.
(2) If the majority of relevant tree pollens are to be included in a diagnostic or therapeutic programme in Western Sweden it should contain birch, alder, hazel, beech and bog-myrtle allergens.
(3) Bet v I, the major birch pollen allergen, could be extracted easily from pollen, and in low amounts from callus and leaves.
(4) In the case of initially negative tests with positive second and third SPTs the incidence ranged between 3.2% (cat dander) and 4.3% (birch pollen) per year.
(5) The sera that did not detect the 15 kD bands in celery failed to react with both the 15 kD mugwort component and the 14 and 16 kD birch components.
(6) In previous experiments it was found that birch, beech, alder, hazel and oak are pollens with importance in pathogenesis of early pollinosis in our region of Central Europe.
(7) We conclude that in children with birch pollinosis oral immunotherapy with high doses of a biologically potent preparation in enteric-coated capsules is effective, easy to perform, economic and safe.
(8) The patients selected for study were subjects with a combined inhalant allergy to birch pollen and an oral allergy to apple fruit.
(9) In the same area, the birch pollen load was 2.8 times higher, which caused specific IgE in 10.5% as against 3.5% of the other group (P less than 0.01) as well as positive skin prick test in 9.0% as against 3.5% (P less than 0.05).
(10) Moreover, a major pollen allergen in birch (BetvI) has a 44% identity with PvPR1 proteins.
(11) It appears that screening for an IgE-mediated allergy can be performed with a limited number of skin tests (rye grass, timothy, birch, house dust mite and cat).
(12) RAST investigations on the sera of 27 patients suffering from celery allergy showed specific IgE to mugwort and birch in 15 cases; sensitization to mugwort or birch alone only occurred in 5 and 7 cases, respectively.
(13) Nine patients with strictly seasonal allergic rhinitis caused by birch pollen and five healthy nonatopic control subjects participated in the present study, which started 1 wk before the birch pollen season and continued throughout the entire pollen season.
(14) Of all positive RAST reactions observed, 74% were against the following allergens: horse and cat epithelium, birch and timothy pollen, and house dust.
(15) Thus 98% of atopic patients with seasonal allergic rhinitis were detected by an allergen panel consisting of timothy, birch and mugwort.
(16) The sera selected were positive in the RAST for both birch pollen and fruits.
(17) Cross-incubations: birch pollen incubated with antibodies against hazel (Ab-CA), or alder (Ab-AI), showed various intensities of gold labelling for each of the three species.
(18) We have studied the influence of substance P (SP) on the proliferative response of concanavalin A (ConA)-activated peripheral blood lymphocytes from 16 birch pollen-allergic patients, sampled before and during the pollen season, and from 15 normal individuals.
(19) The beavers have felled most of the bankside birch, sycamore and other trees they like to eat and use for their dams.
(20) Nine asthmatic patients with an allergy to birch or timothy underwent bronchial allergen provocations on three different trial days, with intervals of 2 to 5 wk.
Poplar
Definition:
(n.) Any tree of the genus Populus; also, the timber, which is soft, and capable of many uses.
(n.) The timber of the tulip tree; -- called also white poplar.
Example Sentences:
(1) Perched in a grove of poplars and with prayer flags stretching away on all sides, Muktinath is Nepal's second-most sacred site for Hindus after Pashupatinath , which in comparison lies rather forlornly at the end of Kathmandu's international airport runway.
(2) In the autumn large amounts of a major storage protein accumulate in the woody stem of poplar trees.
(3) The teenager, who went to Langdon Park School in Poplar, got eight grade As in subjects including maths, science, English literature, geography, religious studies and citizenship; and three B grades in English language, humanities and physical education.
(4) The only significant management change prior to illness was the feeding of poplar tree branches from a lowland area inhabited by skunks and raccoons.
(5) A qualitative analysis of the long-range nuclear Overhauser effects observed indicates that the backbone fold of spinach plastocyanin is very similar to that of poplar plastocyanin, whose structure has been solved by X-ray crystallography and differs in 22 of its 99 amino acid residues.
(6) These pentenyl caffeates proved to be the major sensitizers of propolis and of poplar bud secretion in our previous study.
(7) The complexity of propolis, its supposed anti-inflammatory effect due to flavonoids, and the sensitizing agents originating mainly from the poplar trees are discussed together with the cross-sensitization to balsam of Peru.
(8) The rats produced IgE antibodies to each of the allergens used (maple, willow, poplar, ash, oak, sycamore, hickory, walnut, birch, and elm), yet the allergens had extremely limited cross-reactivity.
(9) Makar, 31, was pronounced dead in the street near the All Saints Docklands light railway station in Poplar on Wednesday night, the Metropolitan police said.
(10) The near-ultraviolet (uv) absorption and CD spectra of parsley PC were found to be qualitatively similar to those of spinach, poplar, and lettuce PC, except for the near-uv CD spectrum of the reduced form at low pH (ca.
(11) To him it should reassert accountability, not least to local Labour electors, in the spirit of the Poplar and Clay Cross martyrs.
(12) Micropropagated shoots of three forest tree species, poplar (Populus tremula x P. alba), wild cherry (Prunus avium L.) and walnut (Juglans nigra x J. regia), were inoculated each with six different wild-type Agrobacterium strains.
(13) The prenyl ester and the phenylethyl ester of caffeic acid, formed in the bud excretion of poplar species, were shown recently to be the major contact allergens in bee-glue.
(14) Immunoglobulin M levels among patients were elevated in the borderline lepromatous and poplar lepromatous groups.
(15) The flavonoid aglycones occurring in poplar bud exudates, and hence also in propolis, are weak sensitizers which play only a minor role in propolis hypersensitivity.
(16) The influence of acetone extract vapours of pepper, poplar buds, linden and aspen was tested.
(17) The nucleotide sequence of the 3'-proximal 1328 nucleotides of poplar mosaic virus (PMV) was determined and shown to contain two large open reading frames (ORFs).
(18) on acidic and neutral ground; its frequency has locally increased by recultivation of slap-dumps and waste land with poplars.
(19) For example, plastocyanins from poplar, oleander, French bean, and spinach have their most intense feature at approximately 425 cm-1; azurins show greatest intensity at approximately 410 cm-1, stellacyanin and ascorbate oxidase at approximately 385 cm-1, and nitrite reductase at approximately 360 cm-1.
(20) Call the Midwife is based on the memoirs of Jennifer Worth and – scripted by Heidi Thomas , who wrote Cranford – it tells the true story of a young midwife going into Poplar in the East End of London in the 1950s.