Many viruses and bacteria infect humans through mucosal surfaces, such as those in the lungs, gastrointestinal tract and reproductive tract. To help fight these pathogens, scientists are working on vaccines that can establish a front line of defense at mucosal surfaces, potentially defending against many infectious diseases.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/3...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/3...