Affiliation: | (1) Q Therapeutics, Inc. 615 Arapeen Dr., Ste. 102, Salt Lake City, UT, USA;(2) Invitrogen Corporation, 5781 Van Allen Way, Carlsbad, 92008 California, USA;(3) Bioinformatics Unit, Branch of Research Resources, National Institute on Aging, NIH, 21224 Baltimore, MD, USA |