from a unique parent cell to fulfill a specific role. The roots of this idea, which date back more than 100 years, helped German scientist Paul Ehrlich win a Nobel Prize in 1908 for work that ultimately resulted in an effective syphilis treatment. Read more: http://news.cnet.com/8301-27083_3-20080710-247/genetically-modified-tobacco-plants-to-fight-hiv/#ixzz1SZvJmIZh You can post this "Genetically modified