Chomarat M, Ichiman Y, Yoshida K
J Clin Microbiol. 1985 Jul;22(1):132-3. doi: 10.1128/jcm.22.1.132-133.1985.
Strain MC31 of Staphylococcus aureus showed diffuse-type growth in regular serum-soft agar (SSA) (pH 7.2), but in alkaline SSA (pH 8.4) the type of growth was compact. The organisms were of extra low virulence in the mouse and were unencapsulated. Based on three properties, the growth type of the S. aureus strains in SSA was designated as pseudodiffuse type.
金黄色葡萄球菌MC31菌株在常规血清软琼脂（SSA）（pH 7.2）中呈弥漫型生长，但在碱性SSA（pH 8.4）中生长类型为致密型。该菌株在小鼠体内的毒力极低且无荚膜。基于这三个特性，金黄色葡萄球菌菌株在SSA中的生长类型被指定为假弥漫型。
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