This invention relates to parenteral and mucosal vaccines against diseases caused by intercellular pathogens using antigens encapsulated within a biodegradable-biocompatible microspheres(matrix)....http://www.google.com.au/patents/USRE40786?utm_source=gb-gplus-sharePatent USRE40786 - Vaccines against intracellular pathogens using antigens encapsulated within biodegradable-biocompatible microspheres
