Are there Internal control genes, that are cell-cycle independent?

[Martin Hartenstein]

Hi, 
I'm investigating cell cycle progression by measuring changes in the
amount of cyclin mRNA by RT-PCR. For this I need an internal control gene
which is cell-cycle independent, since this is not so for commonly-used
internal references such GAPDH or b-actin. Are there any opinions about
suitable internal standard genes which are cell cycle independent?

Martin

Please mail to:
Martin.Hartenstein at bio-geo.uni-karlsruhe.de