Here's a link to a clip on the America's Test Kitchen site showing & comparing gluten washed from bread flour and gluten washed from cake flour. Worth watching if you've never tried this yourself.
thanks for sharing RobynNZ. The video shows an awful lot about gluten.
I had no idea that gluten looked like that. Is it the toughness that makes it undigestible for some people?
Actually, most people who have trouble with wheat have trouble with the gliaden protein, specifically, which is the part of gluten that gives it its extensibility.