Sorry, I nearly laughed out loud at the subject heading
'coloured reactions for students'.
Then when I read the post . . .
. . . I'm off to find some 6M sulphuric to see if any of the creatures
here are students . . .
--
Richard P. Grant MRC Lab of Mol Biol
rpg 'at' mrc-lmb.cam.ac.uk http://www2.mrc-lmb.cam.ac.uk/personal/rpg/
-- Country music - the music of pain --