Abstract
Vaccines were the result of trial and error research until molecular biology and genetic engineering made possible the creation of of many new and improved vaccines. New vaccines need to be inexpensive, easily administered, and capable of being stored and transported without refrigeration; without these characteristics, developing countries find it difficult to adopt vaccination as the central strategy for preventing their most devastating diseases. The authors describe a promising approach to inexpensive and effective vaccines: producing them in plants we commonly consume.
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