The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 1985
Filed:
Sep. 19, 1983
Se-Kyung Oh, Brookline, MA (US);
Trustees of Boston University, Boston, MA (US);
Abstract
A high purity immunosuppression factor (IF) having a molecular weight of about 50,000 or a reduced IF having a molecular weight of about 25,000 derived from the higher molecular weight IF and which is stable in dilute aqueous solutions is obtained from human ascites fluid. An extract of human ascites fluid is subjected to chromatography to recover a component of the ascites fluid rich in the immunosuppression factor and containing proteinaceous material which does not degrade the IF factor. The pure IF is obtained by subjecting the component rich in IF to contact with solid phase anti-human IgG (Fc specific) to recover pure IF having a molecular weight of above 50,000. The reduced IF is obtained by heating the higher molecular weight IF.