i have a protein preparation which has 0.05% sodium azide in it. would that cause a problem when injected in rabbits for antibody production? bip -- bipin k. dalmia the other night i was lying on my bed, looking bipin at iastate.edu up at the beautiful stars, and i said to myself, n2.bkd at isumvs.iastate.edu 'where the F*CK is my ROOF !!' --