(n.) A solution of pyroxylin (soluble gun cotton) in ether containing a varying proportion of alcohol. It is strongly adhesive, and is used by surgeons as a coating for wounds; but its chief application is as a vehicle for the sensitive film in photography.
Example Sentences:
(1) Separating the distal anterior tip and lateral edges of an ingrown toenail from the adjacent soft tissue with a wisp of absorbent cotton coated with collodion gives immediate relief of pain and provides a firm runway for further growth of the nail.
(2) Hexokinase (ATP:D-glucose 6-phosphotransferase EC 2.7.1.2) and pyruvate kinase (ATP:pyruvate 2-0-phosphotransferase EC 2.7.1.40) were co-immobilized within semipermeable collodion microcapsules.
(3) The correlation was similar if the meter was affixed instead directly to the scalp with collodion gel, and the clinical reliability improved.
(4) The electrical resistances and rates of self-exchange of univalent critical ions across several types of collodion matrix membranes of high ionic selectivity were studied over a wide range of conditions.
(5) All of Goyrand's work was edited by Masson in 1870, including a superb case report of giant elephantiasis of the penis and scrotum, a study on cleft lip and the technique of using collodion bands to close large wounds [corrected].
(6) Collodion is a solution of pyroxylin in a solution of 75% ether and 25% alcohol.
(7) However, 3% ethanol had no effect on osmotic water transfer across artificial collodion membranes.
(8) The skin of a girl born with the typical appearance of "collodion baby," evolved into an exfoliative erythroderma that clinically was lamellar ichthyosis.
(9) Aiming to improve the efficiency of the blood purification convective methods either with spontaneous (CAVH) or with pump-assisted (HF) extracorporeal circulation we inserted after the hemofilter a cartridge containing 70 g of collodion-coated activated charcoal (CAC) microencapsulated, obtaining so hemofiltration and hemoperfusion in series (HF+HP).
(10) This adhesion was prevented by Collodion and Formvar.
(11) The collodion baby is the neonatal expression of different disorders of keratinization and as such, constitutes a syndrome.
(12) Based on these findings as well as the observed steady state levels of VP on 24 h immersions in a small fixed volume, the previously proposed mechanism of pseudo-zero-order release could be evaluated further: the adsorbed peptide molecules function as a stock of near-constant activity, since desorption is rather limited, and as long as rapid exchange of bound peptide by external proteins can be prevented by a sufficiently thick (greater than 60 micron) collodion membrane, a slow long-term diffusion process will take place.
(13) Congenital bullous ichthyosiform erythrodermia never begins as collodion baby syndrome.
(14) With cation permeable membranes prepared by the oxidation of preformed collodion membranes, almost exact agreement was obtained between measured and calculated self-exchange rates; the cause of the apparent absence of an electroosmotic effect with these membranes is unknown.
(15) The prognostic value of permeation studies on artificial phospholipid collodion membranes and of the use of the kinetic absorption model in drug design is demonstrated by corresponding studies with chenodesoxycholic acid, indometacin, and clofibrinic acid.
(16) The case of a collodion baby in whom the condition evolved into a mild form of lamellar ichthyosis is presented.
(17) DNA was complexed with blue tetrazolium (BT), then mixed with collodion, and finally adsorbed on macroporous spherical polymeric adsorbent.
(18) On the other hand, the membrane system, "untreated" collodion in contact with KCl solutions, exhibited a behavior in which the values of phi, low in dilute solutions, increased and then decreased following a gradual increase in the external concentration.
(19) Although differential filtration offers a means of assaying samples containing certain mixtures of antibiotics, the degree of separation exhibited by collodion membranes is not sufficient to make them useful for clinical purposes.
(20) A stable papain membrane has been prepared on a collodion matrix by absorbing papain in a collodion membrane and then cross-linking the papain with bisdiazobenzidine 3,3'-disulfonic acid.
Pyroxylin
Definition:
(n.) A substance resembling gun cotton in composition and properties, but distinct in that it is more highly nitrified and is soluble in alcohol, ether, etc.; -- called also pyroxyle.
Example Sentences:
(1) Collodion is a solution of pyroxylin in a solution of 75% ether and 25% alcohol.