DNA vaccine delivered by attenuated intracellular bacteria can be directly delivered into special antigen presenting cells (APCs), so it improves the efficiency of DNA vaccine to a great extent.

• 运用减毒胞内菌运送DNA疫苗能够将DNA直接运送到专业性抗原提呈细胞(APC)内,大大提高了DNA疫苗的摄入效率。