Just found the reference for the linear polyacrylamide / agarose gels
with no crosslinker. These just dissolve when heated in water, and give
better results with counting of tritium than peroxide solubilisation of
polyacrylamide gels. The paper is by Horowitz et al in Analytical
Biochemistry 143, 333-340 (1984).
Mick.Partis at BBSRC.AC.UK Horticulture Research International