Charles Arntzen of Arizona State University developed a banana
that is genetically engineered to provide a hepatitis vaccine.
(Hepatitis is a virus that causes liver disease in humans.) Dr.
Arntzen also uses potatoes as a way to carry a vaccine against
a strain of E. coli that causes bleeding and fluid loss in the
intestines. Potatoes have also been genetically engineered by
a researcher in California who created an edible cholera vaccine
by adding the genes for the cholera toxin to the potato' s genetic
code. (Cholera causes a diarrhea that can lead to severe dehydration
and possibly death.)
about Dr. Arntzen's research.