(1) Blood samples were analysed by mass spectroscopy and gas chromatography.
(2) Previous attempts to purify this enzyme from the liquid endosperm of kernels of Zea mays (sweet corn) were not entirely successful owing to the lability of partially purified preparations during column chromatography.
(3) ASF-II was purified to apparent homogeneity by using concanavalin A-agarose affinity chromatography, DEAE-cellulose chromatography, alumina gel adsorption, and isoelectric focussing techniques.
(4) The overall recoveries of activated ER following chromatography on DEAE-cellulose were significantly lower than the recoveries of the nonactivated ER, 71 and 85%, respectively.
(5) The enzyme was solubilized by Triton X-100 and purified approximately 480-fold by gel filtration and affinity chromatography on alanine methyl ketone-AH-Sepharose 4B.
(6) Glycosyl ceramide concentration was determined by gas-liquid chromatography of the trimethylsilyl ethers of the methyl glycosides.
(7) 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.
(8) Chromatography and immunoassays are the two principal techniques used in research and clinical laboratories for the measurement of drug concentrations in biological fluids.
(9) We have compared two new methods (a solvent extraction technique and a method involving a disposable, pre-packed reverse phase chromatography cartridge) with the standard method for determining the radiochemical purity of 99Tcm-HMPAO.
(10) 2,3-Dihydroxybenzamide had previously been detected only as a minor metabolite of salicylamide by paper chromatography.
(11) Sephadex LH-20 column chromatography was used for the separation of the steroid prior to assay.
(12) Ether extracts were analyzed by gas chromatography-mass spectrometry (GC-MS) and various chlorinated and non-chlorinated compounds were detected, e.g.
(13) The free nucleoside IV was obtained by removal of blocking groups by sodium methoxide catalyzed deacylation, deionization under reducing atmosphere, and chromatography on neutral alumina.
(14) High pressure liquid chromatography combined with radioimmunoassay showed marked heterogeneity of SPLI and SLI.
(15) Glycoproteins were isolated by lectin affinity chromatography or by elution from nitrocellulose membranes.
(16) Thus Sephadex chromatography of the solution obtained by dissolving the antigen-antibody precipitate in these media repeatedly gave two peaks corresponding to anti-ovalbumin and ovalbumin.
(17) Separation of PL by thin-layer chromatography revealed a prevalence of phosphatidylcholine followed by phosphatidylethanolamine.
(18) A rapid method is described for the purification and analysis of synthetic oligonucleotides, based on reversed-phase high-performance liquid chromatography.
(19) These analyses were carried out on unfractionated culture fluids and on fractions obtained by fast protein liquid chromatography separation using Superose 6 gels.
(20) The corresponding hydrides, mono-n-butyltin hydride, di-n-butyltin hydride, tri-n-butyltin hydride, monophenyltin hydride, diphenyltin hydride triphenyltin hydride, are detected by electron-capture gas chromatography after clean-up by silica gel column chromatography.
Difference
Definition:
(n.) The act of differing; the state or measure of being different or unlike; distinction; dissimilarity; unlikeness; variation; as, a difference of quality in paper; a difference in degrees of heat, or of light; what is the difference between the innocent and the guilty?
(n.) Disagreement in opinion; dissension; controversy; quarrel; hence, cause of dissension; matter in controversy.
(n.) That by which one thing differs from another; that which distinguishes or causes to differ; mark of distinction; characteristic quality; specific attribute.
(n.) Choice; preference.
(n.) An addition to a coat of arms to distinguish the bearings of two persons, which would otherwise be the same. See Augmentation, and Marks of cadency, under Cadency.
(n.) The quality or attribute which is added to those of the genus to constitute a species; a differentia.
(n.) The quantity by which one quantity differs from another, or the remainder left after subtracting the one from the other.
(v. t.) To cause to differ; to make different; to mark as different; to distinguish.
Example Sentences:
(1) All transplants were performed using standard techniques, the operation for the two groups differing only as described above.
(2) This study was undertaken to determine whether the survival of Hispanic patients with squamous cell carcinoma of the head and neck was different from that of Anglo-American patients.
(3) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
(4) Spectral analysis of spontaneous heart rate fluctuations, a powerful noninvasive tool for quantifying autonomic nervous system activity, was assessed in Xenopus Laevis, intact or spinalized, at different temperatures and by use of pharmacological tools.
(5) Age difference did not affect the mean dose-effect response.
(6) The prenatal risk determined by smoking pregnant woman was studied by a fetal electrocardiogram at different gestational ages.
(7) Although the mean values for all hemodynamic variables between the two placebo periods were minimally changed, the differences in individual patients were striking.
(8) Phospholipid methylation in human EGMs is distinctly different from that in rat EGMs (Hirata and Axelrod 1980) in that the human activity is not Mg++-dependent, and apparent methyltransferase I activity is located in the external membrane surface.
(9) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
(10) The outward currents are sensitive to TEA and their reversal potentials differ.
(11) During control, no significant difference between systolic fluctuation (delta Pa) and pleural swings (delta Ppl) was found.
(12) This difference was not due to ATPase activity in the assay.
(13) No differences between the two substances were observed with respect to side effects and general tolerability.
(14) Five probes of high specificity to individual chromosomes (chromosomes 3, 11, 17, 18 and X) were hybridized in situ to metaphase chromosomes of different individuals.
(15) The cross sectional area of the aortic lumen was gradually decreased while the length of the stenotic lesion gradually increased by using strips with different width.
(16) For male schizophrenics, all symptom differences disappeared except one; blacks were more frequently asocial.
(17) Between 22 HLA-identical siblings and 16 two-haplotype different siblings, a significant difference in concordance of reactions for the B-cell groups was noted.
(18) It would be fascinating to see if greater local government involvement in running the NHS in places such as Manchester leads over the longer term to a noticeable difference in the financial outlook.
(19) Snooker, which became and remains a fixture in the BBC2 schedules, was chosen for showing because it is the sport in which different shades are most significant.
(20) Would people feel differently about it if, for instance, it happened on Boxing Day or Christmas Eve?