目的建立气管注入细菌致兔急性肺损伤(ALI)模型，为研究细菌致ali的致病机制及其治疗提供理论依据。
Objective: to establish the rabbit model of acute lung injury (ALI) by intratracheal instillation of Escherichia coli, and to study the pathogenesis of bacteria-induced ALI.
粪肠球菌是顽固性和继发性根管感染中最易分离到的细菌，其主要致病机制之一是形成生物膜。
Enterococcus faecalis (E. faecalis) is most frequent isolated from teeth with failed endodontic treatment. Biofilm-formation is one of the most important pathogenic mechanisms in post-treatment teeth.
与病毒相比，真菌、细菌弱致病菌及其诱导抗病机制的研究相对滞后。
The study of resistance mechanism induced by fungi and bacteria lagged behind that of virus.
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