What's the difference between defoliate and exfoliate?

Defoliate


Definition:

  • (a.) Alt. of Defoliated

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) kurstaki were compared against four species of defoliating forest lepidopterans in diet-incorporation assays.
  • (3) "It may be that thistle-cutting or spraying is unnecessary this summer because the caterpillars will defoliate them for you."
  • (4) Among these there are hexachlorophene and the herbicide 2,4,5-trichlorophenoxyacetic acid, which was used as a defoliant in the Vietnam War.
  • (5) A sward is kept in a vigorous state by preventing repetitive defoliation at the one extreme, and avoiding excessive shading (mature growth) of photosynthetic material at the other.
  • (6) The effect of defoliants butyphos (I), dropp (II), butylcaptacs (III), hinazopin (IV), syhat (V), tetra-n-butylammonium bromide (VI), etrel (VII), gemetrel (VIII), allyl-4-methylpyridinium bromide (IX), 1-amino-cyclopropan-1-carbonate (ACPC) (X) at various concentrations (1 x 10(-5)-2 x 10(-4) M) on respiration, oxidative phosphorylation (OP) and permeability of the inner mitochondrial membrane from rat liver has been studied.
  • (7) Defoliation has affected soil fertility and caused miscarriages, stillbirths and deformities.
  • (8) Evidence indicates that the defoliant action of auxin is mediated through the enhanced amounts of ethylene in the blade.
  • (9) Chemical defoliants are applied to about 40% of the U.S. Cotton acreage as a harvest-aid practice prior to machine picking.
  • (10) For defoliants, insecticides, acaricides, nematocides and zoocides a good correlation between calculated and experimental values of skin-resorptive toxicity for rats was shown.
  • (11) The other defoliants either induce respiration generally in metabolic states 3 and 4 (IV, VI, IX) or have no effect on the respiration and OP (V, VII, VIII, X).
  • (12) Inorganic arsenicals have been used in agriculture as pesticides or defoliants for many years and, in localized areas, oxides of arsenic have contaminated soils as a result of fallout from ore-smelting operations and coal-fired power plants.
  • (13) Forty Chinchilla rabbits of both sexes were examined for changes in some parameters of protein, lipid and trace elements metabolism (total protein, protein fractions, urea, residual nitrogen in blood serum, lipids, total cholesterol, free cholesterol, diglycerides, phospholipids, triglycerides, free fatty acids and the trace elements selenium, iron, zinc and so forth in the liver) during the animals' poisoning with the defoliant magnesium chlorate.
  • (14) Raw cottons derived from defoliated and nondefoliated fields were examined for content of bract and leaf trash Chemical defoliation lowered, but did not remove, leaf as a major trash component.
  • (15) Arsenicals are used in agriculture as pesticides and defoliants.
  • (16) As well as defoliating oaks, leaving them vulnerable to other pests and diseases, the moth poses a significant health threat to people.
  • (17) Cell wall extensibility is not increased by treatment and the evidence suggests that a small increase in the (turgor-wall yield stress) term may be the cause of the very rapid response to defoliation.
  • (18) Part of the former base consists of a dry field where US troops once stored and mixed the defoliant before it was loaded on to planes.
  • (19) Coffee plants sit defoliated and damaged by leaf rust fungus in Guatemala, which is flourishing as the world warms.
  • (20) The parasites were associated with extensive defoliation of the copulatory epithelium and in some instances had penetrated the submucosa resulting in petechiae.

Exfoliate


Definition:

  • (v. i.) To separate and come off in scales or laminae, as pieces of carious bone or of bark.
  • (v. i.) To split into scales, especially to become converted into scales at the result of heat or decomposition.
  • (v. t.) To remove scales, laminae, or splinters from the surface of.

Example Sentences:

  • (1) No exfoliation could be observed at lower concentrations.
  • (2) We compared two noninvasive methods of sampling exfoliated cervical cells--cervicovaginal lavage and scrape-Cytobrush.
  • (3) 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.
  • (4) A prospective study was performed by 30 ophthalmologists to determine the prevalence of exfoliation syndrome (ES) in different areas of France and its relationship with glaucoma.
  • (5) There was no evidence of exfoliated acinar cells in the drainage fluid.
  • (6) They take the same appearance in vivo and in vitro: cell agglutination, nuclear hypertrophy, exfoliation and release of cellular material, formation of uniting bridges across the gap between the shelves.
  • (7) The ability of phage group II staphylococcal strain UT 0101 to produce exfoliative toxin and bacteriocin could be eliminated at a high frequency after growth at high temperatures or in the presence of ethidium bromide or sodium dodecyl sulfate.
  • (8) The combined action of IFN-gamma and TNF-alpha caused a dose-related cellular exfoliation, leading to the formation of a mucoid cap made of mucus and cellular debris.
  • (9) Nineteen patients with suspected malignant obstruction at the confluence of the bile ducts had exfoliative biliary cytology and fine needle aspiration cytology performed.
  • (10) While many spontaneously resorb or exfoliate, some, as in this case, may need surgical removal.
  • (11) Exfoliative cytology from the uterine cavity or ultrasonography does still not allow the final and definite diagnosis.
  • (12) Exfoliative cytology is helpful in the follow-up of bladder tumours.
  • (13) The presence of influenza virus type A (H1N1), A (H3N2) and B was revealed by immunofluorescence in exfoliated cells collected from nasopharynx.
  • (14) Exfoliated cells from patients with squamous carcinoma of the cervix contain antigens related to herpesvirus subtype 2, as revealed by direct or indirect immunofluorescent techniques.
  • (15) The distribution of collagen types I, IV and laminin was studied in normal and exfoliative vessels.
  • (16) Extensive necrossis and exfoliation of the seminiferous elements were conspicuous.
  • (17) The morphology of apocrine cells exfoliated in breast cyst fluid (BCF) was studied in 78 BCF samples obtained from 39 premenopausal patients with gross cystic disease who were bearing two simultaneously aspirated cysts.
  • (18) Acidified Maalox 70 and Al(OH)3 were significantly more potent than unmodified agents against all four tested types of acute mucosal lesions, and this action was probably due to their 'mild irritant' effect as evidenced by extensive exfoliation of the surface epithelial cells observed microscopically after the exposure of the mucosa to these agents.
  • (19) Exfoliative cytology emerges as a valuable tool for the diagnosis of allergic conjunctivitis, while the presence of noncellular elements is of particular diagnostic significance.
  • (20) In the case of non-zero fluxes at the boundaries the condition of stability of exfoliated stationary structures in the systems with bistable local dynamics is given.

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