【序号】1 【作者】Amalendu Das, Michael Heidelberger 【题目】Identification of D-galacturonic acid in the specific capsular polysaccharide of pneumococcal type XXV 【期刊】Carbohydrate Research 【卷期】Volume 48, Issue 2, June 1976, Pages 304-305 【连接】http://www.sciencedirect.com/science/article/pii/S0008621500832292 【序号】2 【作者】John B. Robbins 【题目】Vaccines for the prevention of encapsulated bacterial diseases: current status, problems and prospects for the future 【期刊】Immunochemistry 【卷期】Volume 15, Issues 10-11, November 1978, Pages 839-854 【连接】http://www.sciencedirect.com/science/article/pii/0161589078901177