' "N. benthamiana is a perfect plant for the process of
agroinfiltration. The desired antibody gene is added as a DNA
fragment to an engineered bacterium called Agrobacterium tumefaciens.
This was once the source of crown gall disease in plants. Now it has
been harnessed to saturate a plant with useful DNA. Plants are dipped
whole into a solution of A. Tumefaciens and the leaves absorb
the bacteria. Then, the plantsí hijacked manufacturing centers begin
producing the desired protein in bulk...
"Tobacco and its cousins contain toxic alkaloids that have to be removed before the protein can be administered as a drug." (Removal to what %?)