THE PNEUMOCOCCAL POLYSACCHARIDES.

摘要: Publisher Summary This chapter focuses on pneumococcal polysaccharides. The pneumococci are ovoid, nonmotile, nonsporing organisms that usually occur in pairs enveloped by a capsule. capsule is the most striking morphologic feature of organism and voluminous when at its virulent stage. Pneumococci generally Gram-positive, although, older cultures, Gram-negative cells frequently encountered. Pneumococcal pneumonia rarely primary infection lung, but factors, such as damage to respiratory tract, fatigue, chilling body, general debilitation, predispose infection. become invasive acquired inhalation or already present pharynx; first circumstance indicates may be contagious disease contracted from carriers, second, it arise an autogenous Pneumococcus was one species subdivided into types immunological techniques, knowledge relationship between structure antigenicity enhanced chemical investigations various types.