Amersham Health As

Ge Healthcare As

Amersham Plc

Christopher Black

Henry Raphael Wolfe

Halldis Hellebust

Rosemina Merchant

Harry Storflor

Geir Stokke

Fahar Merchant

Edward R Bacon

Robert A Snow

Gregory L McIntire

Morten Eriksen

Auden Tornes

Joel Cornacoff

Virginia Ann Gates

Geraldine Cooney

Torgrim Engell

David L Ladd

Jasbir Singh

Anne Kjersti Fahlvik

Anne Naevestad

Vinay Chandrakant Desai

Kenneth Edmund Kellar

Wolfgang H Gunther

Dennis Fujii

Jennifer Wellons

Michel Gacek

Marshall Beeber

Brian Weekley

George Na

Barbara Yuan

Jack Stevens

The present invention provides a method of purifying diphtheria toxin comprising (1) fermenting a microorganism strain capable of producing diphtheria toxin using glucose as a carbon source, said method comprising adding glucose to a growing culture whereby the addition of glucose maintains microorganism growth effective to support diphtheria toxin production; and (2) purifying the diphtheria toxin from the culture by contacting a toxin containing preparation derived therefrom with an ion exchange matrix, eluting a fraction containing the toxin, applying the eluate to a hydrophobic matrix, and eluting a fraction containing the toxin.

Process for production of diphtheria toxin

The present invention provides a method of purifying diphtheria toxin comprising (1) fermenting a microorganism strain capable of producing diphtheria toxin using glucose as a carbon source, the method comprising adding glucose to a growing culture whereby the addition of glucose maintains microorganism growth effective to support diphtheria toxin production; and(2) purifying the diphtheria toxin from the culture by contacting a toxin containing preparation derived therefrom with an ion exchange matrix, eluting a fraction containing the toxin, applying the eluate to a hydrophobic matrix, and eluting a fraction containing the toxin.

Process for production diphtheria toxin

The present invention provides a method of purifying diphtheria toxin comprising (1) fermenting a microorganism strain capable of producing diphtheria toxin using glucose as a carbon source, the method comprising adding glucose to a growing culture whereby the addition of glucose maintains microorganism growth effective to support diphtheria toxin production; and (2) purifying the diphtheria toxin from the culture by contacting a toxin containing preparation derived therefrom with an ion exchange matrix, eluting a fraction containing the toxin, applying the eluate to a hydrophobic matrix, and eluting a fraction containing the toxin.

Radioactive sources, preferably radioactive seeds, for use in brachytherapy comprising a radioisotope within a sealed biocompatible container, wherein at least one part of a surface of the container is roughened, shaped or otherwise treated so that it is no longer smooth. The surface treatment may enhance the ultrasound visibility of the source and/or reduce the tendency of the source to migrate once implanted in a patient's body. Preferred radioisotopes are palladium-103 and iodine-125.

Products and methods for brachytherapy

The invention relates to MR contrast media containing composite nanoparticles, preferably comprising a superparamagnetic iron oxide core provided with a coating comprising an oxidatively cleaved starch coating optionally together with a functionalized polyalkyleneoxide which serves to prolong blood residence.

Constrast media

Growing community of inventors

Norristown, PA, United States of America

Christopher Black