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:
Apr. 02, 1985
Filed:
Dec. 14, 1982
Applicant:
Inventors:
Assignee:
Biotest-Serum-Institut GmbH, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; A61K / ; B01D / ;
U.S. Cl.
CPC ...
436543 ; 436807 ; 210660 ; 210672 ; 210927 ; 2601 / ; 424 88 ; 514-2 ;
Abstract
Crude interleukin-2 extract is subjected to group-selective dye-ligand absorption chromatography in one or more stages of purification with a matrix-gel medium consisting of a Blue A ligand or variant thereof or of a Green A ligand in a concentration of approximately 1.5 to 3.0 mg/ml of expanded matrix at a pH of approximately 6.8 to 8.5, a temperature of approximately 4.degree. to 40.degree. C., and a flowthrough rate of approximately 10 to 100 ml/h, employing an eluent. Either PHA-free or extremely pure interleukin-2 is obtained, depending on the overall number of purification stages.