MeSH definition : 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.;
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.