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.:

US 7422897 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 09, 2008

Filed:

Jan. 08, 2001
Applicants:

James N. Petitte, Raleigh, NC (US);

Yi Guo Zhang, Raleigh, NC (US);

Inventors:

James N. Petitte, Raleigh, NC (US);

Yi Guo Zhang, Raleigh, NC (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12N 5/00 (2006.01); C12N 5/02 (2006.01); C12N 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method of producing undifferentiated avian cells expressing an embryonic stem cell phenotype. The method includes the steps of collecting avian gonadal cells including primordial germ cells from an avian embryo after the formation of the primitive streak; depositing the avian gonadal cells in contact with a preconditioned feeder matrix; and growing the avian gonadal cells on the pre-conditioned feeder matrix in the presence of media for a time sufficient to produce an avian cell culture consisting essentially of undifferentiated avian cells expressing an embryonic stem cell phenotype.


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