Carrots Modified to Contain Hepatitis B VaccineFri May 10, 5:35 PM ETBy Hannah CleaverBERLIN (Reuters Health) - German scientists have grown genetically modified carrots that contain the vaccine against hepatitis B, which they say could dramatically cut the costs of preventing the disease. Development has reached the stage where the carrots are ready to begin pre-clinical trials and researchers say that carrot-sourced vaccines could be a reality within about 3 years. The current vaccine against hepatitis B is expensive to produce and is administered via three injections, which further increases costs and strains health services. But now plant specialists and...