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. 25, 1995
Filed:
Jun. 08, 1993
Applicant:
Inventors:
John A Maples, Davie, FL (US);
Patricia A Roth, Pembroke Pines, FL (US);
Melissa J Stiglitz, North Miami Beach, FL (US);
Assignee:
Coulter Corporation, Miami, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01N / ; C12N / ; G01N / ;
U.S. Cl.
CPC ...
4352402 ; 435 29 ; 435-2 ; 536124 ; 436 10 ;
Abstract
The invention describes the preparation of preserved, non-infectious control cells. The control cells are prepared by modification, activation or otherwise changing selected normal leukocyte cells, tissue culture cells or zenogenic transplants in immunosuppressed animals to have characteristics of abnormal cells or by the addition of cells from an established cell line, which has been similarly modified or activated, to a normal leukocyte population. The preferred method of preserving the control cells is by lyophilization using an isotonic 10% trehalose solution.