In one recent article, the writer talks at length about vegetables picking up components of the molecular structure of antibiotics. What wasn't talked about and should be is that vegetables can also pickup protein from the soil, this includes prionic disease is caused by deformed proteins which another study just determined increased its infectivity index by 700 percent due to certain elements being present in some soils.
So a heads up here, if your a vegan and thought you would escape the mad cow, hog, chicken disease, think again.