《英文msh词典》Capsule,Bacterial
[入口词] Capsule,Bacterial
[主题词] Bacterial Capsules
[英文释义] An envelope of loose gel surrounding a bacterial cell which is associated with the virulence of pathogenic bacteria. Some capsules have a well-defined border,whereas others form a slime layer that trails off into the medium. Most capsules consist of relatively simple polysaccharides but there are some bacteria whose capsules are made of polypeptides.