在琼脂上产生β溶血的肺炎球菌。
Pneumococci producing beta hemolysis on agar.
作者信息
Lorian V, Popoola B
出版信息
Appl Microbiol. 1972 Jul;24(1):44-7. doi: 10.1128/am.24.1.44-47.1972.
Fifty-six strains of pneumococci were studied for hemolysis on blood-agar Twenty-two (39%) of these strains produced beta hemolysis on agar containing horse red cells, six (11%) were beta hemolytic for sheep cells, and none lysed human or rabbit red cells. The substance producing beta hemolysis appeared after 24 hr of anaerobic incubation. Subsequent exposure to air at low temperature (6 to 20 C) for 48 hr was needed to activate it. There was no relation between serological type and beta hemolysis production. This substance appears to be different from the pneumococcal hemolysin previously described.
对56株肺炎球菌进行了血琼脂上溶血情况的研究。其中22株（39%）在含有马红细胞的琼脂上产生β溶血，6株（11%）对绵羊细胞呈β溶血，无一株能溶解人或兔红细胞。产生β溶血的物质在厌氧培养24小时后出现。随后需要在低温（6至20摄氏度）下暴露于空气中48小时以激活它。血清型与β溶血的产生之间没有关联。该物质似乎与先前描述的肺炎球菌溶血素不同。
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