Gradients with automated DNA sequencers?

[HARDIES at THORIN.UTHSCSA.EDU]

Hi Netters:

Does anyone use (or know of) wedge gels (or other gradient configurations)
used on an ABI sequencer (or other DNA sequencer with a fixed sensor 
position)?  I'm writing a grant proposal about gradient systems in 
DNA sequencing, and am under the impression that they aren't applied
much to automated sequencers.  Am I misinformed?

Steve Hardies, Assoc. Prof. of Biochem., Univ. of Texas HSC at San Antonio
Hardies at uthscsa.edu

For information on our graduate program in Biochemistry:
http://bioc02.uthscsa.edu/biochem.html