B族链球菌血清型III的细胞外抗原
Extracellular antigens of serotype III group B streptococci.
作者信息
Doran T I, Straus D C, Mattingly S J
出版信息
Infect Immun. 1980 Dec;30(3):890-3. doi: 10.1128/iai.30.3.890-893.1980.
Abstract
Two sialic acid-containing type III group B streptococcal antigens were obtained from a supernatant growth medium, purified by anion exchange or gel filtration, and found to be free of group B reactivity. Quantitation of the high-molecular-weight extracellular type III antigen indicated that approximately 20-fold more antigen was recoverable from the growth medium than could be obtained by neutral buffer extraction of whole cells.
摘要
从一种上清生长培养基中获得了两种含唾液酸的B族链球菌III型抗原，通过阴离子交换或凝胶过滤进行纯化，结果发现它们无B族反应活性。对高分子量细胞外III型抗原的定量分析表明，从生长培养基中可回收的抗原量比通过用中性缓冲液提取全细胞所获得的抗原量多大约20倍。
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