Gerasimov V N, Kislichkin N N, Korobov V I
Zh Mikrobiol Epidemiol Immunobiol. 1991 Apr(4):3-5.
The use of transmission electron microscopy (the negative contrast and ultrathin section techniques) has made it possible to show that F. tularensis vaccine strain is capable, under normal conditions and in mixtures with other gram-negative and gram-positive bacteria, of forming cell aggregations with close contacts between cells, this contact being probably irreversible. The ultrastructure of bacteria taking part in the formation of intercellular contacts remains intact.
使用透射电子显微镜（负染和超薄切片技术）已能够表明，土拉弗朗西斯菌疫苗株在正常条件下以及与其他革兰氏阴性和革兰氏阳性细菌混合时，能够形成细胞聚集，细胞间紧密接触，这种接触可能是不可逆的。参与细胞间接触形成的细菌超微结构保持完整。
