There's a Molecular Probes Ab reagent that works very well on Form fixed
Pwax sections ( after citric soln boiling). Havn't got spec to hand but can
if reqd
Beta gal + pwax sectioning works very well too ( obviously, as pointed out
by another, signal intensity will be lower in thin sections)

Carl Hobbs
Laboratory Manager
Molecular Neurobiology Group
MRC Centre for Developmental Neurobiology
4th Floor,South Wing

New Hunts House
KCL
Guy's campus
SE1 1UL
020 7848 6810
carl.hobbs@kcl.ac.uk