(n.) A white or pinkish crystalline substance, C6H5OH, produced by the destructive distillation of many organic bodies, as wood, coal, etc., and obtained from the heavy oil from coal tar.
(n.) Any one of the series of hydroxyl derivatives of which phenol proper is the type.
Example Sentences:
(1) The teeth were embedded in phenolic rings with acrylic resin.
(2) The presence of the expected C19 neutral and C18 phenolic steroids was confirmed.
(3) The effect of mycobacterial phenolic glycolipids from Mycobacterium leprae, M. bovis BCG, and M. kansasii on in vitro proliferative responses by human blood mononuclear cells from healthy BCG vaccinees was investigated.
(4) The chemistry involved reaction rate constant measurements of MSF hydrolysis and for reactions with phenolic, amine, oxime, hydroxamic acid, phenyl N-hydroxycarbamate, and hydroxylamine compounds and cupric imidazole and bipyridyl complexes.
(5) In the liver, the major site of benzene metabolism, benzene is converted by a cytochrome P-450-mediated pathway to phenol, the major metabolite, and the secondary metabolites, hydroquinone and catechol.
(6) Except in the case of the phenolic metabolite, structures were confirmed by direct comparison of electron impact mass spectra and chromatographic behaviour with those of authentic samples.
(7) It may be concluded that phenolization of the sympathetic nervous system provides the same results as surgical sympathectomy but has the advantage of lower morbidity and shorter hospitalization (24 h vs 10 days).
(8) It was hypothesized that the observed activity variation of the paracetamol analogues was based on the relative abilities of these compounds to undergo H atom loss at the phenolic oxygen, and on the relative stabilities of the resulting free-radical species.
(9) Lipopolysaccharide content correlated significantly with drug uptake and sensitivity, and it appeared to determine the degree of penetration of the cell envelope by these chlorinated phenols.
(10) Liberation of the polysaccharides from the carrier by treatment with aqueous phenol resulted in loss of the serological activity.
(11) Here we report that phenol hydroxylation to hydroquinone is also catalyzed by human myeloperoxidase in the presence of a superoxide anion radical generating system, hypoxanthine and xanthine oxidase.
(12) The 2-substituted phenoxy-6-methoxy-8-aminoquinolines (4-6) were afforded by reduction of the corresponding 8-nitroquinolines (1-3) which were obtained by condensation of 2-chloro-6-methoxy-8-nitroquinoline and substituted phenols.
(13) This report reviews the treatment of pilonidal sinus by phenol injection in 54 patients.
(14) One group of rats was made immunocompetent towards P. aeruginosa by intraperitoneal injection of phenol-killed P. aeruginosa while a second group remained naive to this organism.
(15) These data indicate that the phenolic hydroxyl groups of xanthomegnin might contribute to its uncoupling action on the oxidative phosphorylation of mitochondria.
(16) The coupled dienone-phenol re-arrangement and keto-enol tautomerism of this quinone methide produce the observed 3,4-dihydroxybenzaldehyde.
(17) The phenol metabolites benzoquinone and 1,2,4-benzenetriol both activated the glutathione transferase in microsomes 2-fold independently of added NADPH.
(18) The isolation of plant enzymes is frequently hampered by the presence of phenolic compounds, pigments and mucilages.
(19) An enzyme (EC 2.8.2.1) that catalyses the transfer of sulphate from adenosine 3'-phosphate 5'-sulphatophosphate to phenols was purified approx.
(20) Physico-chemical parameters of membranes of skeletal muscles' sarcoplasmic reticulum in antioxidant insufficiency, which was modelled by excluding alpha-tocopherol from the animals ration, and after treatment with phenol antioxidant ionol were studied.
Picric
Definition:
(a.) Pertaining to, or designating, a strong organic acid (called picric acid), intensely bitter.
Example Sentences:
(1) The renal tissue was fixed with a mixture of buffered picric acid-paraformaldehyde-glutaraldehyde and immunostained with the peroxidase-antiperoxidase method for the electron microscope with the following steps: antikallikrein antiserum, anti-IgG serum, peroxidase-antiperoxidase complex, 3-3' diaminobenzidine-H2O2, and post-staining with osmium tetroxide.
(2) We found that the picric acid paraformaldehyde perfusion provided satisfactory conditions of fixation for visualizing the progesterone receptor in sections of frozen tissue.
(3) The effect of picric acid on the release of [14C]acetylcholine has been investigated in isolated ileal synaptosomes of guinea-pig.
(4) Microscopic inspection of successive sections at intervals of 100 mu was performed following fixation and optical demonstration of all lymph nodes in a picric acid medium.
(5) The animals received picric application to the mucosa of either the pharyngolaryngeal or the hard palate region.
(6) In human skin, basement membranes were fully demonstrated on paraffin sections fixed by PLP fixative or by 4% formalin, but only partially on sections fixed by picric acid-containing fixatives.
(7) The technique is based on picric acid in ethyl alcohol fixation and saponin red cell lysis, followed by mithramycin staining for DNA.
(8) Special attention was given to the hematoxylin basic fuchsin picric acid stain and it was noted that the basic fuchsin was taken up by contracted or damaged myocytes, which according to their morphology in suspension revealed irregular contractions, but not by undamaged or necrotic myocytes.
(10) Application of dark field microscopy to sections fixed with picric acid--formalin and stained with crotonaldehydefuchsin allows the demonstration of neurosecretory granules in the neurones of the suprachiasmatic nuclei of normal rats.
(11) When the tissue was fixed first in formalin followed by picric acid and stained in SIPC, a clear differentiation of interphase nuclei into four color classes, viz., green, orange, red and brown can be recorded.
(12) In order to simplify diagnostic susceptibility testing of mycobacteria against thiacetazone, hydroxylamine, p-nitrobenzoic acid and picric acid, we modified the standard procedure by using Middlebrook 7H11 agar in a single quadrant petri dish.
(13) Organs of hens treated with picric acid (1%), trichloroacetic acid (10%), and sulphosalicylic acid were used for the protein precipitation.
(14) Picric acid (10 micrograms per plate) demonstrated mutagenicity (both frame shift and base substitution-gype mutations) only after activation with a rat liver homogenate preparation.
(15) These include the use of picric acid to precipitate proteins followed by alkalization, or the use of alkaline picrate after protein precipitation and adsorption to Fuller's earth.
(16) HBFP technique is capricious and the differentiation step should be controlled stringently; ethanolic picric acid, therefore, is recommended as a differentiation fluid.
(17) Rats were perfused with 2% paraformaldehyde + 0.15% picric acid in 0.1 M phosphate buffer, then transferred to the buffer.
(18) However, picric acid did not initiate the release of 5-hydroxytryptamine.
(19) During growth, the mutant HL PM-1 transiently accumulated an orange-red metabolite, which was identified as a hydride-Meisenheimer complex of picric acid.
(20) The reaction was also inhibited by picric acid and epsilon-TNP-aminocaproic acid.