An abscess is a localized collection of PMN's. 膿腫是局限化的嗜中性粒細胞感染灶。
Methods Bacteroides fragilis infection of clinical speciments was examined with immunofluorescent assay using monoclonal antibody pool angainst B. fragilis as the diagnostic agent. 方法首次使用抗脆弱類桿菌單克隆抗體池作為診斷試劑，採用免疫熒光法直接檢測感染灶中的脆弱類桿菌。
Conclusion The findings of the present study imply that the natural foci of human monocytic ehrlichiosis may exist in northwestern Fujian Province. 結論福建西北部林區可能存在人單核細胞埃立克體病的自然疫源地。
