(n.) A leaf, usually smaller than the true leaves of a plant, from the axil of which a flower stalk arises.
(n.) Any modified leaf, or scale, on a flower stalk or at the base of a flower.
Example Sentences:
(1) Enterobacter agglomerans was the most predominant bacterium on leaf and bract.
(2) Field-dried cotton bract, a contaminant of cotton dust, has been implicated in byssinosis pathogenesis.
(3) Cotton bract tannin is a potent stimulus for platelet aggregation and secretion.
(4) Byssinosis, COPD, cotton fever and cotton pneumoconiosis may be different types of responses due to the different duration of exposure, the different parts of bronchial tree (upper respiratory tract, small airway, and respiratory part) where deposition occurs, and the different components of cotton dust (broken cotton fibers, bracts, pericarps, bacteria, and fungi).
(5) Comparison of the cytotoxicity dose curves for aqueous bracts extracts with those for tannin demonstrated that tannin was the major cytotoxin present in bracts.
(6) Bract is the most abundant component in respirable raw cotton dust.
(7) After clearing and removal of the cuticle, the bracts are bleached, washed, dehydrated, and if studied by light microscopy, stained in 2% chlorazol black E and mounted in Diaphane; or, if studied by scanning electron microscopy, dried by the critical-point method and either left uncoated or coated with a film of various conductive metals.
(8) The human T lymphocyte proliferative response to cotton bract tannin was shown to be dependent upon the presence of monocytes.
(9) Pulmonary function measured by flow changes on partial expiratory flow volume curves was used to assess airway responses to the bract extracts after their inhalation by a panel of volunteers.
(10) The content of bract was unaffected by this harvest-aid practice.
(11) Raw cotton from 4 machine picked varieties and 2 machine stripped varieties is examined by stereomicroscope and bright-field microscopy for presence of plant trash(bract, leaf, stem, seed, boll, and weed fragments-size range 841-2000mum) that gives rise to cotton dust during yarn manufacturing operations.
(12) The effects of a water extract of cotton bracts (CBE) on guinea pig isolated trachealis smooth muscle was studied.
(13) The authors established an in vitro cytotoxicity assay using 51Cr release to assess time- and dose-dependent toxicity of condensed tannin, a component of bracts, on porcine aortic and pulmonary arterial endothelial cells.
(14) Senescence affected the population levels of the various genera on leaf and bract.
(15) The provenance of bristles and bracts suggests that the bristle cells move into their final positions.
(16) Mill workers are exposed to bract which has weathered in the field, but it is not known whether biologic effects of bract are due to intrinsic plant compound(s) or to contamination occurring during field weathering.
(17) To determine if constituents of cotton plants might play a role in byssinosis by injuring pulmonary epithelium, we added extracts of cotton dust, green bract, and field-dried bract to human A549 and rat type II pneumocytes.
(18) Macrophages obtained by bronchoalveolar lavage from volunteers pre-challenged with bract extract release increased amounts of chemotactic factor and superoxide anion.
(19) The role of nonspecific reactivity of the airways in this reaction to cotton bract extract is undefined.
(20) Extracts of cotton dust and field-dried bract produced significant dose- and time-dependent lysis and detachment of both target cells, while green bract extract was less damaging.
Thistle
Definition:
(n.) Any one of several prickly composite plants, especially those of the genera Cnicus, Craduus, and Onopordon. The name is often also applied to other prickly plants.
Example Sentences:
(1) It was the best of the opening three as Stefan Johansen, who became a champion for the second time in sixth months after winning the Norwegian top flight with Stromsgodset, exchanged passes with Griffiths before continuing his driving run and drilling the ball into the Thistle goal.
(2) It is concluded that, of the compounds identified, solstitialin A 13-acetate and cynaropicrin have toxic potential in cell cultures, containing cells from the substantia nigra of the rat, the specificity of action to cells of the substantia nigra remains to be shown, and that a toxic action in the midbrain may contribute to the nigro-pallidal encephalomalacia, caused by the ingestion of the yellow star thistle by horses.
(3) "It may be that thistle-cutting or spraying is unnecessary this summer because the caterpillars will defoliate them for you."
(4) That’s the hardest part of our job – to know that we can’t put them where they belong.” For context, Thistle notes that there used to be 640 beds in New Hampshire for treatment.
(5) Dairy farmer Dave Lawrence took the Guardian to the spot where the beavers are usually seen, close to an island in the river thick with nettles, willow and thistles.
(6) The reverse of the new coin shows the English rose, Welsh leek, Scottish thistle and Northern Irish shamrock emerging from one stem within a royal coronet – a design created by 15-year-old schoolboy David Pearce, who won a competition to create the image.
(7) We look forward to it, the gaffer will look forward to it, he will have a game plan and will try to get into the next round.” It was Thistle’s first defeat in seven games but their defender Danny Seaborne said they had been undone by a striker enjoying a great run of form.
(8) Thistle-tube-shaped pulps in the permanent teeth were observed in five patients.
(9) The first example is liquorice root, its active principle carbenoxolone, and the drugs Biogastrone and Caved-S for the treatment of gastic, peptic and duodenal ulcers; the second example is the fruits of the milk thistle, its active principles silymarin and silybinin as well as the drug Legalon for the treatment of liver diseases.
(10) One night in the Crown and Thistle pub in Northiam, Ajao flew into a row with a local, Piers Mott.
(11) Which is all well and good, but you’re intrigued to know what’s going on at Celtic Park, where Celtic are entertaining Inverness Caledonian Thistle.
(12) In 15 patients (13 women and two men) with cholesterol stones in the gall-bladder a special (Thistle) catheter was introduced into the gall-bladder under local anaesthesia by percutaneous transhepatic puncture.
(13) MB • Aberdeen move to within a point of Celtic after comeback at Partick Thistle • Steven Pye: when Aberdeen ruled Scottish football Facebook Twitter Pinterest Mathias Pogba moved from Crawley Town to Partick Thistle last summer but has found goals hard to come by north of the border.
(14) The floral-emblem £1 coins, which began last year with a rose for England and a daffodil for Wales, will continue with the addition of coins featuring a thistle for Scotland and a flax plant for Northern Ireland.
(15) At Glasgow's Thistle Hotel on Friday night a 22-piece Gaelic choir sang Highland Cathedral.
(16) Weeds elicit two levels of allergenicity, a high level by the Ragweeds and other members of the Asteraceae, and a much lower level by members of the families Amaranthaceae (Pigweed, Western Water Hemp), Chenopodiaceae (Lamb's Quarters, Kochia, and Russian Thistle), and Plantaginaceae (Plantain) in the St. Louis, Missouri area.
(17) Aberdeen moved to within one point of Premiership leaders Celtic after battling from behind to beat Partick Thistle 2-1 at Firhill.
(18) In sensitized individuals, Russian thistle floral bracts pierced the skin and stimulated an urticarial reaction.
(19) THE MOST ANCIENT AND MOST NOBLE ORDER OF THE THISTLE The Rt Hon David Alexander Cospatrick Douglas-Home, the Earl of Home CVO, CBE.
(20) He remained 'Sir' Alec because he had been created a Knight of the Thistle in 1962.