Results 261 to 270 of about 160,815 (327)

Effect of mosquito age and reproductive status on melanization of sephadex beads in Plasmodium-refractory and -susceptible strains of Anopheles gambiae.

Journal of Invertebrate Pathology, 1995
Malaria-refractory and -susceptible strains of the mosquito vector, Anopheles gambiae, differ in their response to negatively-charged Sephadex CM-25 beads.
Jaesun Chun, Michael A. Riehle, S. Paskewitz   +2 more
semanticscholar   +1 more source

[46] Chromatography on lipophilic sephadex

1975
Publisher Summary This chapter describes methods for preparation of different lipophilic Sephadex derivatives that permit the creation of straight- or reversed-phase partition and adsorption systems and of systems based on specific group interactions.
Sjövall J, Nyström E
openaire   +3 more sources

The use of Sephadex for the concentration of pteridines

Journal of Chromatography A, 1967
Abstract For the isolation of small quantities of pteridines from dilute solutions, such as the culture filtrates of Tetrahymena pyriformis, Sephadex G-25 and G-10 (fine) have proved to be of value. Volumes as large as the void volume of the Sephadex column can be used, resulting in the elimination of large amounts of ultraviolet-absorbing material ...
Virginia C. Dewey, George W. Kidder
openaire   +3 more sources

A shared genetic mechanism for melanotic encapsulation of CM-Sephadex beads and a malaria parasite, Plasmodium cynomolgi B, in the mosquito, Anopheles gambiae.

Experimental parasitology, 1996
A Plasmodium-refractory strain of Anopheles gambiae that melanizes ookinetes and intrathoracically inoculated CM-Sephadex beads was mated to a Plasmodium-susceptible strain that does not melanize the parasite or the beads.
M. Gorman, A. Cornel, F H Collins, S. M. Paskewitz   +3 more
semanticscholar   +1 more source

The Sephadex story

Polymer Engineering & Science, 1998
AbstractThe environment and the circumstances leading to the Sephadex group of products for gel filtration (SEC, size exclusion chromatography) are described. The importance of Porath's and the author's experience from zone electrophoresis is stressed.
openaire   +2 more sources

Separation of lipids on methylated sephadex

Analytical Biochemistry, 1965
Abstract Methylated Sephadex G-25 and G-50 have been prepared. These materials are useful for the separation of lipid-soluble compounds. The separation of phospholipids, triglycerides, cholesterol esters, cholesterol, fatty acids, bile acids, and some polymers has been studied. The separations appear to be based partly on differences in size and/or
Ernst Nyström, Jan Sjövall
openaire   +3 more sources

Isoelectric focusing in a Sephadex column

Analytical Biochemistry, 1976
Abstract An isoelectric focusing technique on a Sephadex column is described. This technique provides for the fractionation of amphoteric compounds in a pH gradient and allows for better than 95% recovery of the focused material. Focusing in this system over a pH range of 3.5–10 reaches equilibrium in approximately 5 hr and thereby reduces the ...
Herman S. Cheung, Timothy J. O'Brien, Lorin K. Johnson, Hope H. Liebke   +3 more
openaire   +3 more sources

The chromatography of antibiotics on SP-Sephadex

Journal of Chromatography A, 1973
Abstract A rapid procedure is described that permits the quantitative separation and determination of ampicillin, dicloxacillin, methacycline, doxycycline and oxytetracycline by means of column chromatography on SP-Sephadex. The compounds are eluted from a column with sodium acetate solutions of concentration 0.005 and 0.01 M (pH 4.5) and assayed ...
G. Tortolani, M. Mazza
openaire   +3 more sources

Preimplantation diagnosis: Sephadex filtration and human serum albumin gradients do not select spermatozoa by sex chromosome: a fluorescent in-situ hybridization study

, 1993
Fluorescent in-situ hybridization (FISH) of decondensed sperm nuclei has been used directly to evaluate the enrichment efficiency of human sperm separation using Sephadex gel filtration and human serum albumin (HSA) gradients.
F. Vidal, M. Moragas, V. Català, M. J. Torelló, J. Santaló, G. Calderón, C. Giménez, P. Barri, J. Egozcue, A. Veiga   +9 more
semanticscholar   +1 more source

Column chromatography of steroids on Sephadex LH-20.

Journal of Clinical Endocrinology and Metabolism, 1971
Several solvent systems are described for the separation of neutral and phenolic steroids. Benzene and methanol in different proportions, with and without methylene chloride or chloroform, were found to be the most suitable systems for the separation of ...
B. R. Carr, G. Mikhail, G. Flickinger
semanticscholar   +1 more source