Here's a patent to read.  Just go to patent # 6100054
http://www.uspto.gov/patft/index.html

United States Patent  6,100,054
Conneely ,   et al.  August 8, 2000

------------------------------------------------------------------------------

--
Production for recombinant lactoferrin and lactoferrin polypeptides using DNA
sequences in various organisms


Abstract
The verified cDNA sequences for human, bovine and porcine lactoferrin protein
have been used to prepare recombinant lactoferrin for therapeutic and
nutritional applications. Regions of the cDNA such as the Fe binding sites
can be used to make an hLF polypeptide product. The present invention
provides novel plasmids, transfected eucaryotic cells and methods of
producing these plasmids and transfected eucaryotic cells. The novel plasmid
contains the cDNA for lactoferrin protein. Methods for the production of
lactoferrin protein in fungi and bacteria are also provided. Thus, the
present invention provides an efficient and economical means for the
production of recombinant lactoferrin protein and lactoferrin related
polypeptides.


------------------------------------------------------------------------------

--
Inventors:  Conneely; Orla M. (Houston, TX); Headon; Denis R. (Galway, IE);
O'Malley; Bert W. (Houston, TX); May; Gregory S. (Houston, TX)
Assignee:  Baylor College of Medicine (Houston, TX)
Appl. No.:  456108
Filed:  May 30, 1995

             ***********************************************
The LACTNET mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software together with L-Soft's LSMTP(TM)
mailer for lightning fast mail delivery. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html