(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.
Pellucid
Definition:
(a.) Transparent; clear; limpid; translucent; not opaque.
Example Sentences:
(1) Three patients had pellucid marginal corneal degeneration complicated by corneal edema.
(2) Our computer-based corneal topography analysis system was used to study the keratoscope photographs (keratograms) from two patients with classic pellucid marginal degeneration and a third patient with no inferior corneal thinning, whose keratoscope mire pattern was suggestive of the condition.
(3) We performed central pachymetry on two patients with pellucid and Terrien's corneal marginal degeneration with mean central corneal thicknesses of .487 mm and .466 mm, respectively.
(4) Pellucid marginal corneal degeneration is a bilateral disease characterized by a narrow band of corneal thinning localized 1-2 mm from the inferior limbus.
(5) Follicles were classified on the basis of the number of layers of follicle cells, the presence and degree of development of the zone pellucide, and the presence of an antrum.
(6) Pellucid marginal degeneration of the cornea is a bilateral, clear, inferior, peripheral corneal-thinning disorder.
(7) A successful corneal wedge resection was performed to correct the visual impairment in the left eye of a 30-year-old male who suffered from bilateral pellucid marginal degeneration.
(8) There were 53 patients with keratoconus, 5 with pellucid marginal corneal degeneration, 2 with keratoglobus, and 1 with superior corneal thinning.
(9) The morphologic changes with age concern the height of the 3rd ventricle, the extension of the pellucid septum and the stereotaxic topography.
(10) Five eyes in four patients with pellucid marginal corneal degeneration were treated by lamellar crescentic resection of the thinned area inferiorly.
(11) When idiopathic peripheral corneal thinning remains clear, it is regarded as pellucid degeneration; vascularization, scarring, and lipid keratopathy are regarded as Terrien's marginal degeneration.
(12) Crescent-shaped, deep corneal scars were observed in seven (39%) of 18 patients with pellucid marginal corneal degeneration.
(13) Quantitation of relative staining intensity found keratoconus and pellucid marginal degeneration corneas to be 49% and 40% as intensely stained, respectively, as normal corneas, a statistically significant decrease (P less than 0.01).
(14) Dissolution of the pellucid membrane by brief ATP treatment reveals a zygotic surface which changes from day to day.
(15) This article reports a case of bilateral corneal pellucid marginal degeneration.
(16) Monoclonal antibody against keratan sulfate (KS) was used for immunofluorescent staining of sections of human corneas from 8 normal eyes, 19 with keratoconus, 4 with pellucid marginal degeneration, 5 with primary macular corneal dystrophy, and 1 with recurrent macular corneal dystrophy.
(17) We believe that penetrating keratoplasty offers an excellent surgical result for patients with pellucid marginal corneal degeneration.
(18) The ocular lens somehow remains pellucid despite bombardment by ultraviolet radiation and endogenous hydrogen peroxide (present in the humoral fluids which bathe this tissue).
(19) The decreased KS staining was not localized in stromal scar tissue found in the keratoconus and pellucid marginal degeneration corneas.
(20) American ophthalmologists are generally not familiar with the condition because most of the literature concerning pellucid degeneration is European.