Swollen "capsule Cell body Figure 18.20 A positive Quellung, or capsular swelling. precipitins, is confirmatory for S. pneumoni identify the precise capsular serotype. The moose with the capsular polysaccharide intensifies 肺炎链球菌 Streptococcus pneumoniae Figure 18.18 The coure of hacterial pneumonia. As the pneumococcus traces a pathway down the respiratory tree, it provokes intense 1glammaton and exudate fommation The blocking of the bronchioles and alveoli by consolidation of inflammatory cells and products is evident15 肺炎链球菌 Streptococcus pneumoniae