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:
Jan. 17, 1989
Filed:
Dec. 17, 1986
Frank D Lee, Palo Alto, CA (US);
Takashi Yokota, Palo Alto, CA (US);
Ken-ichi Arai, Palo Alto, CA (US);
DNAX Research Institute of Molecular and Cellular Biology, Inc., Palo Alto, CA (US);
Abstract
Plasmid vectors are provided that carry complementary DNA (cDNA) clones cng for polypeptides exhibiting murine interleukin-2 activity. One of these polypeptides is 168 amino acids in length, including a potential leader sequence of about 19 amino acids. The cDNA is derived from messenger RNA isolated from a mouse T-cell line after activation with concanavalin A. The cDNA was cloned by incorporation into a plasmid vector, which is then transformed into E. coli. The plasmid vector also contained DNA segments from the SV40 virus, permitting expression of the cDNA after transfection into a mammalian host cell, such as monkey COS-7 cells.