Talk:Chemical Analysis
From Portal Puzzle Wiki
Don't apples contain more fructose than glucose? - http://en.wikipedia.org/wiki/File:D-Fructose_cyclic.png
They do, however fructose is a 5-membered ring, whereas the picture appears to have a 6-membered ring. I am not convinced that is is glucose because there are a lack of alcohol groups attached - jhartzog
Now that Portal, among many other Valve games, have been ported to MacOSX, these pictures could actually make some sense. - djyuki