Hafez K, El Kholy A M, Facklam R R
J Clin Microbiol. 1981 Nov;14(5):530-3. doi: 10.1128/jcm.14.5.530-533.1981.
Specific precipitating and opsonic neutralizing antigens were identified in dilute-nitrous acid extracts of group A streptococci. This was done by decreasing the temperature and time of exposure of the streptococcal cells to the nitrous acid. Ninety percent of 31 strains of group A streptococcal dilute-nitrous acid extracts formed precipitin lines of identity with conventional Lancefield extracts of the same group A streptococci.
在A组链球菌的稀硝酸提取物中鉴定出了特异性沉淀和调理素中和抗原。这是通过缩短链球菌细胞暴露于硝酸的温度和时间来实现的。31株A组链球菌稀硝酸提取物中有90%与同一A组链球菌的传统兰斯菲尔德提取物形成了同一沉淀线。