(1) In addition to the phase diagrams reported here for these two binary mixtures, a brief theoretical discussion is given of other possible phase diagrams that may be appropriate to other lipid mixtures with particular consideration given to the problem of crystalline phases of different structures and the possible occurrence of second-order phase transitions in these mixtures.
(2) In 0.17 M Na+(aq), tRNA(Phe) exists in its native conformation and the number of strong binding sites (Ka greater than or equal to 10(4)) was estimated to be 3-4 by titration experiments, in agreement with X-ray structural data for crystalline tRNA(Phe) (Jack et al., 1977).
(3) Electron microscopy revealed the presence of a hitherto unreported peculiar "pilovacuolar" inclusion in numerous mitochondria, composed of an electron dense pile or rod within a vacuole, while globular or crystalline inclusions were absent.
(4) The advantages of the incision through the pars plana ciliaris are (1) easier approach to the vitreous cavity, (2) preservation of the crystalline lens and an intact iris, and (3) circumvention of the corneal and chamber angle complications sometimes associated with the transcorneal approach.
(5) These two crystallins were compared with respect to their native molecular masses, subunit structures, peptide mapping and amino acid compositions in order to establish the identity of each crystallin.
(6) Freeze-dried mannitol preparations were shown to be of a crystalline nature.
(7) Antigenic properties of crystalline pepsin, trypsin and chymotrypsin were studied in 9 rabbits immunised with these enzymes.
(8) X-ray diffraction spectrum of 1:8 coprecipitate (COPPT) showed no crystalline structure of AD.
(9) However, significant differences in the formation and melting of the highly crystalline phase were evident between the two polar headgroup stereoisomers.
(10) Degradation studies of the crystalline antibiotic, m.p.
(11) Crystalline derivatives of the amino sugar i. e. methyleremosaminide and methyl-N,O-acetyleremosaminide (alpha- and beta-anomers) were prepared.
(12) A systematic structural comparison of several carp gamma-crystallins with high methionine contents was made by the secondary-structure prediction together with computer model-building based on the established X-ray structure of calf gamma-II crystallin.
(13) The lens cell-free system synthesizes in addition to the crystallins, polypeptides which co-electrophorese with lens plasma membrane protein components.
(14) Arrhenius plots of the leakage rates showed breaks in the 20-25 degrees C temperature range, which correspond to the gel-liquid crystalline phase transition of the target liposomes.
(15) These results suggest that ATP modulates the functional behavior of alpha-crystallin.
(16) Because anesthetics transform the solid-gel membrane into a liquid-crystalline state, and because phospholipid membranes display an anomaly in permeability at the phase transition, dimyristoylphosphatidylcholine vesicles were studied at temperatures above the main phase transition to avoid this anomaly.
(17) By monitoring the synthesis of specific lens crystallin proteins, and the morphological and cellular changes associated with this differentiated system, we have demonstrated a close correlation between statin expression and cell commitment to the G0 nonreplicative cell cycle state.
(18) Developmental regulation of crystallin protein synthesis was observed in rat lenses between embryonic day 19 and postnatal day 21.
(19) Bovine lens calf gamma-II crystallin contains five histidine residues at sequence positions 14, 53, 84, 117, and 122.
(20) A second crystalline material was observed within cells in the 15,000 X g pellet from spinal fluid.
Saccharin
Definition:
(n.) A bitter white crystalline substance obtained from the saccharinates and regarded as the lactone of saccharinic acid; -- so called because formerly supposed to be isomeric with cane sugar (saccharose).
Example Sentences:
(1) Since d-fenfluramine failed to alter saccharin preference, it is unlikely that the slowed eating rate induced by this compound indicates a reduction in food palatability.
(2) The onset of tolerance to morphine analgesia was studied in 34 female Wistar rats immediately after they drank a dextrose-saccharin cocktail or tap water for 6 or 24 hours.
(3) the colours: Allura red AC, erythrosine, canthaxanthin and the caramels; three anti-oxidants: BHA, BHT and the gallates; the sweeteners: polyols, aspartame, saccharin and cyclamates.
(4) The exposure of the mouse bladder to saccharin was very brief, because the time required for 50 percent of the compound to be eluted from the pellets was about 5.5 hours.
(5) The rats were then poisoned with lithium chloride after each of three sessions in an attempt to condition a taste aversion to the saccharin.
(6) The saccharin litters were mainly characterized by a slowering in the body growth evolution.
(7) 3-Amino[3-14C]benz[d]isothiazole-1, 1-dioxide was prepared from [3-14C]-saccharin.
(8) A shift of intake from 5% to 10% ethanol was also demonstrated with increasing time under shock, while saccharin and water intake decreased.
(9) A two-bottle choice test between the saccharin solution and water was given to all animals on the third and fourth days after the conditioning day.
(10) These results are consistent with reports which have found that rats selected for high or low alcohol intake have corresponding high and low intakes of saccharin.
(11) Other results revealed that ibotenic acid lesions of the insular cortex attenuated the reaction to the novel taste of saccharin in a familiar environment but failed to affect the ingestion of a novel food in a novel environment or passive avoidance learning.
(12) An illness-induced taste aversion was conditioned in rats by pairing saccharin with cyclophosphamide, an immunosuppressive agent.
(13) On each trial, access to saccharin at normal ambient temperature was followed by injection of drug or saline and placement for 6 hr into a temperature-controlled enclosure.
(14) However, saccharin does not trigger a fixed rate of lapping at any point in the sequence.
(15) Before and after treatment the following were recorded: subjective and objective nasal MCT time, using an original composition of vegetable charcoal powder and saccharin powder at 3%; nasal obstruction.
(16) They were trained to respond on a tongue-operated solenoid-driven drinking device that delivered 0.005 ml of a glucose and saccharin solution (G + S) per lick.
(17) Quantitation of o- and p-sulfamoylbenzoic acid residues in saccharin and its sodium salt is achieved by a method comprising methanolic extraction and high-performance ion exchange chromatography.
(18) Unlike typical carcinogens which interact with DNA, sodium saccharin is not genotoxic, but leads to an increase in cell proliferation of the urothelium, the only target tissue.
(19) The correlation between the FDD test, the Jones fluorescein test, and the saccharin taste test was low.
(20) Five-week-old F344 male rats were given sodium saccharin as 5% of the diet beginning either immediately (Group 1) or 2, 4, 6, or 18 weeks (Groups 2, 3, 4, or 5, respectively) after freezing of the bladder, and sacrificed 2 years after the start of the experiment.