yán / jiū / rén / yuán / zhèng / zài / guān / chá / tūn / shì / xì / bāo / rú / hé / bǎo / hù / zǔ / zhī / miǎn / shòu / gǎn / rǎn研究人员正在观察吞噬细胞如何保护组织免受感染。Researchers are observing how phagocytes protect tissue from infection.