What on earth is DE52?

[Xin Guo]

Hi, everyone:

In a recent paper (Koleske, A.J. and Young, R.A. NATURE 1994,
368:466-9), I came across DE52. Koleske utilized column DE52
in their RNA polymerase II complex purification. What on earth
is DE52? I can't find it in their referred referances and 
can't find in Bio Rad and Pharmacia catalogues either. Would
someone please enlighten me on this? Thanks a lot.


Xin              vp23qw83 at ubvms.cc.buffalo.edu