What's the difference between fluorescence and polychromate?
Fluorescence
Definition:
(n.) That property which some transparent bodies have of producing at their surface, or within their substance, light different in color from the mass of the material, as when green crystals of fluor spar afford blue reflections. It is due not to the difference in the color of a distinct surface layer, but to the power which the substance has of modifying the light incident upon it. The light emitted by fluorescent substances is in general of lower refrangibility than the incident light.
Example Sentences:
(1) The assembly reaction is accompanied by characteristic changes in fluorescence emission and dichroic absorption.
(2) Such an increase in antibody binding occurred simultaneously with an increase in the fluidity of surface lipid regions, as monitored by fluorescence depolarization of 1-(trimethylammoniophenyl)-6-phenyl-1,3,5-hexatriene.
(3) The dependence of fluorescence polarization of stained nerve fibres on the angle between the fibre axis and electrical vector of exciting light (azimuth characteristics) has been considered.
(4) The sensitivity of an indirect fluorescent antibody (IFA) test (screening test) for the detection of antibodies to cytomegalovirus (CMV) was examined by using 128 serum specimens and quaternary aminoethyl (QAE)-Sephadex A50 column chromatography to separate IgM from IgG class antibodies.
(5) Absorbance or fluorescence measurements may be used for detection.
(6) In the present study, 125 oesophageal biopsies obtained under direct vision at endoscopy from 22 patients with Barrett's oesophagus were systematically studied using fluorescence and peroxidase antiperoxidase single and double-staining immunocytochemical methods employing highly specific antibodies to localize the following peptide-containing cell types in Barrett's mucosa: gastrin, somatostatin, gastric inhibitory polypeptide, motilin, neurotensin and pancreatic glucagon.
(7) Likewise, they had little or no effects on the fluorescence anisotropy of TMA-DPH, which is also thought to be located in the interfacial region of the lipid bilayer, either when the probe was located in the outer layer of the plasma membrane or when the probe was located in the inner membrane compartment.
(8) Furthermore, experiments with the fluorescence-activated cell sorter revealed increased forward light scatter from resting exudate PMN compared to blood PMN.
(9) Sulphuric acid fluorescence is used for quantitation and specificity is achieved by the addition of tritiated oestrone to the urine hydrolysate.
(10) At the light-microscopic level, adrenergic fibres were identified due to their formaldehyde-induced fluorescence.
(11) Equilibrium and kinetic studies of the interaction of gene 32 protein of T4 phage with single-stranded fd DNA were performed monitoring the changes in protein fluorescence.
(12) The drug is extracted from serum or urine with ethyl acetate, separated by TLC, and determined by fluorescence quenching densitometry.
(13) In all these subjects, fluorescent staining and G-banding on chromosomes from cultured leukocytes confirmed their karyotype.
(14) Vital staining of neuroblastoma cells with acridine orange produces a bright intracellular red-orange fluorescence most probably due to the occurrence of RNA.
(15) Time-resolved tyrosine fluorescence anisotropy shows global correlation times broadly in agreement with the NMR results, but with an additional faster correlation time [approximately 600 ps].
(16) The specific fluorescence was affected following reserpine or 6-hydroxydopamine treatment; however, the rewarming process restored fluorescence only in the reserpine-treated tissue.
(17) I evaluated use of the fluorescence polarization technique to measure neocarzinostatin, a proteinaceous antitumor antibiotic, and its antibody, in serum.
(18) In the analysis of background fluorescence, the principal components were, as for the two-step technique, autofluorescence and propidium spectral overlap.
(19) Luminal and myoepithelial cells have been separated from normal adult human breast epithelium using fluorescence activated cell sorting.
(20) The influence of exogenous gangliosides on the structure of the viral envelope was studied using fluorescent and photoactivatable phospholipids incorporated into the viral membrane.
Polychromate
Definition:
(n.) A salt of a polychromic acid.
(n.) A compound which exhibits, or from which may be prepared, a variety of colors, as certain solutions derived from vegetables, which display colors by fluorescence.
Example Sentences:
(1) These findings are supported by animal experiments in rabbits with the aid of the polychrome sequence marking technique using fluorochromes.
(2) Experiments in sheep, dogs, and rabbits combining intravital staining of blood circulation and polychrome fluorescent labeling of bone remodeling leads to the conclusion that early bone porosis in the vicinity of the implants is the result of internal remodeling of cortical bone and is induced by necrosis rather than by unloading.
(3) The following methods were used: polychrome injection of arteries, veins, lymph capillaries and vessels, macro-microdissection, staining after van Gieson and with hematoxylin-eosin, impregnation with 0,25--1% solution of silver nitrate, dehydration and clearing, calculation of thickness of loops per 1 mm2 and their depth by means of ocular micrometer.
(4) The tannic acid-polychromic stain method (Mason et al., 1985) designed for the identification of the cultured alveolar type II cells has been adapted to cryostat sections of human lungs.
(5) Polychrome sequence marking and histological tests demonstrated that filling up of bony defects started later with turbine-driven drills than with drills of 2,000 r.p.m.
(6) Impressive polychrome wall murals painted on plaster converted Teotihuacan into a painted city.
(7) High-performance liquid chromatographic analysis of degraded stain samples has shown the products of methanolic degradation to be different from those obtained in aqueous polychroming reactions.
(8) Polychrome injection of arteries and veins was made.
(9) Improved polychrome staining of 1-1.5 mum epoxy sections is achieved with sequential applications of a single basic fuchsin-methylene blue mixture at two different pH values.
(10) Useful extensions of CL microscopy to the field of spectral imaging are obtained with the introduction of a slit, a polychromator and an area detector, substituting for the linear imager.
(11) Drăgan's high-speed PBT (polychrome blue tannin) staining method enables cellular elements to be detected in oral smears in one minute at most.
(12) The different classes of immunoglobulins and their kinetics are determined by the use of monospecific antibodies linked to different enzymes which give a polychromic specific staining.
(13) The staining abnormalities of the first degree disorders are characterized by nonreactivity to the Polychrome stain of the Papanicolaou technique as well as to scarlet red stain of the Shorr technique.
(14) The image of the distribution of 81Br- or 19F-, coded in another color scale, can be superimposed, giving a polychromic image of the cell, thus showing the intracellular localization of the compound.
(15) At 60 C polychroming is rapid, the absorption peak reaching 640-620 nm in 3 days.
(16) The TBLN are revealed by means of polychromic injection of Gerota mass into the lung tissue, or directly into the lymph nodes revealed.
(17) The liver tissue specimens were fixed in OsO4, embedded in epoxy resin, cut 4 microns thick and stained with polychrome.
(18) Polychromic injection of arteries, veins and lymphatic bed, staining of preparations after van Gieson, Weigert, with hematoxylin-eosin and morphometry were the methods applied.
(19) We developed a tannic acid and polychrome stain that can visualize these intracellular inclusions in rat alveolar type II cells by light microscopy and that can be used for autoradiography.
(20) These deposits were polychromic, exhibiting blue, green, red, pink, orange, gold, and yellow colors.