Mycoplasmas are widespread in nature as conditional pathogen, which may be the unique prokaryote that can cohabit with eukaryote and interact permanently with mammalian cells.

• 支原体是广泛存在于自然界的条件致病微生物,可能是唯一可以与真核生物共生,并可与哺乳动物细胞长期相互作用的原核生物。