RNA extraction with 5.2S Band

[lcwilliams at MEDUSA.UNM.EDU]

Dear Colleagues:
	I have been isolating some RNA from human tissue.  When I run
this RNA out on a gel, I get three ribosomal bands.  The third band
is a 5.2S band.  This band occurs only in some of the samples.  Does 
anyone know why the band does occurs in some samples and not in others?
When you see a 5.2S band does that tell you something about the tissue or
is it a result of the isolation technique?  Any help to figure out this
puzzle will be greatly appreciated.

Thank you!
Laurie Williams
University of New Mexico
Pediatrics