dible vaccination is the question of whether or not they can be useful in humans (Landrige 2000). Nevertheless, Arntzen and his collaborators obtained reassuring results in the first published human trial, of a dozen subjects who ate raw potatoes containing E. coli. Arntzen has also seen immune reactivity in nineteen of twenty people who ate a potato vaccine aimed at the Norwalk virus. Also Hilary Koprowski has fed transgeic lettuce carrying a hepatitis B antigen to three volunteers, and two of the subjects displayed a good systemic response (Landrige 2000). If research continues to provide results like the few just mentioned, the edible vaccine would be the next biggest thing since sliced bread to third world countries. Not only would these foods provide vaccination, but the would also provide nourishment, they would be relatively inexpensive, and easy to obtain!...
