For example, immunologists reported last fall that patients injected with an experimental DNA-based malaria vaccine showed not just malaria antibodies but also significant levels of killer T cells.

• 例如，去年秋天免疫学家报道，病人注射了实验DNA霍乱疫苗不仅出现霍乱抗体，而且杀伤性T细胞的水平也明显增加。