Recombinant vaccines?

Question

Preparation

Answer 1

Eg.

As a new direction in the development of affordable new vaccines, transgenic plants have been developed that express surface proteins of viruses that are pathogenic to animals or humans. For example, Agricultural Genetics in England has genetically engineered the cowpea mosaic virus to include a surface antigen from the foot-and-mouth disease virus; this virus affects lifestock. This genetically engineered virus was used to infect its natural host, black-eyed pea, and the introduced gene from the foot-and-mouth disease virus was expressed handsomely in the plant. The cowpea mosaic virus eventually kills the plant, and therefore the plant needs to be sacrificed a few weeks after infection. One leaf from the infected pea plant produces enough surface antigen to serve as vaccine for 200 doses. http://photoscience.la.asu.edu/photosyn/...