Phagocyte 偷上海夫 "Swollen"capsule Cell body Pneumococd Figure 18.20 A positive Quellung,or capsular swelling,test with precipitins,is confirmatory for S.pneumoniae.It car Exudate identify the precise capsular serotype.The reaction with the capsular polysaccharide intensifies the caps Bronchus 肺炎链球菌 Bronchiole Figure 18.18 9 The course of bacterial pneumonia.As the pneumococcus traces a pathway down the respiratory tree,it provokes intense inflammation and exudate formation.The blocking of the bronchioles and alveoli by consolidation of inflammatory cells and products is evident.9 上海交通大学通识教育核心课程《微生物的世界》 肺炎链球菌