Identification and Quantification of a Pneumococcal Cell Wall Polysaccharide by Antibody-Enhanced Chromatography Assay oleh James Z. Deng, Zhifeng Chen, James Small, Yue Yuan, Kara Cox, Aimin Tang, Jeanette Roman, Liming Guan, Katrina Feller, Frances Ansbro, Kalpit Vora