Re: PI and Fixation

MORGANTL@aol.com
Sun, 3 Dec 1995 00:04:45 -0500

>Does anybody have any information or experience using PI with fixation? Is
>there any washing out of the PI or does extracellular PI have any influence?
>Is there any problem with storing the cells in PBS for any length of time?

PI is not irreversibly bound to DNA. At low concentrations (probably
somewhere below 5 ug/ml) the floursence intensity will decrease. It's best
to add it 5-10 min prior to flow analysis. Any storage/fixation can be down
without PI. What, specifically, are you trying to accomplish?

Thomas L. Morgan, Ph.D.
Department of Radiation Oncology
Kaiser Permanente Medical Center
Los Angeles, CA 90027

213-667-3560
morgantl@aol.com


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CD-ROM Vol 3 was produced by Monica M. Shively and other staff at the Purdue University Cytometry Laboratories and distributed free of charge as an educational service to the cytometry community. If you have any comments please direct them to Dr. J. Paul Robinson, Professor & Director, PUCL, Purdue University, West Lafayette, IN 47907. Phone: (765)-494-0757; FAX(765) 494-0517; Web http://www.cyto.purdue.edu , EMAIL cdrom3@flowcyt.cyto.purdue.edu


Home Page Table of Contents Sponsors E-Mail Archive Web Sites

CD-ROM Vol 3 was produced by Monica M. Shively and other staff at the Purdue University Cytometry Laboratories and distributed free of charge as an educational service to the cytometry community. If you have any comments please direct them to Dr. J. Paul Robinson, Professor & Director, PUCL, Purdue University, West Lafayette, IN 47907. Phone: (765)-494-0757; FAX(765) 494-0517; Web http://www.cyto.purdue.edu , EMAIL cdrom3@flowcyt.cyto.purdue.edu