Transgenic plants for vaccines production: expectations and limitations

The expression of antigens in vegetables and fruits has opened up a new ave nue for the development of oral vaccines. In a recent report, an oral multi -component vaccine comprising a viral and a bacterial antigen has been succ essfully designed and has shown protection in mice. Even though there are s till improvements to be made in the areas of expression levels and glycosyl ation, this is a promising technology for the future and for vaccine produc tion.