Coccoid formation as a mechanism of species-preservation in Helicobacter pylori: an ultrastructural study.

摘要: Helicobacter pylori (H. pylorii) changes from a spiral form to coccoid by the aggravation of its surrounding environment. It was believed that the coccoid H. pylori indicated to be dying or becoming dormant. However, the implication of coccoid formation, itself, has not yet been elucidated. In this study, both the ultrastructural changes and the localization of the intracellular DNA were observed during coccoid formation in H. pylori. Some coccoid forms were observed to adhere to each other during transformation from the spiral form. The DNA …