Brock D W, Georg L K
J Bacteriol. 1969 Feb;97(2):589-93. doi: 10.1128/jb.97.2.589-593.1969.
In a previous serological study, we compared 14 isolates of Actinomyces israelii serotype 2 with 13 serotype 1 cultures. The present study reports the morphological, physiological, and biochemical characteristics of these same 27 cultures. All of the isolates exhibited similar cellular morphology, and all but one produced the typical spider type microcolony on solid media. Twelve of 13 serotype 1 isolates produced the molar tooth type macrocolony, whereas only 2 of 14 serotype 2 cultures produced this type of rough colony. All of the serotype 1 isolates fermented arabinose with the production of acid; none of the serotype 2 cultures fermented this carbohydrate. All 27 cultures produced the greatest amount of growth when cultured under anaerobic conditions and grew poorly or not at all in air. Both groups of organisms produced similar reactions on other biochemical test media; these findings suggested that A. israelii serotype 2 should not be given a species designation.
在之前的一项血清学研究中，我们将14株以色列放线菌2型分离株与13株1型培养物进行了比较。本研究报告了这27种培养物相同的形态、生理和生化特征。所有分离株均表现出相似的细胞形态，除一株外，其余在固体培养基上均产生典型的蜘蛛型小菌落。13株1型分离株中有12株产生臼齿型大菌落，而14株2型培养物中只有2株产生这种粗糙菌落。所有1型分离株发酵阿拉伯糖产酸；2型培养物均不发酵这种碳水化合物。所有27种培养物在厌氧条件下培养时生长量最大，在空气中生长不良或根本不生长。两组生物体在其他生化测试培养基上产生相似的反应；这些发现表明，不应给以色列放线菌2型指定一个种名。
