Bacterial capsule slideshare

Bacterial capsules are composed of polysaccharides or other polymers that surround the cell wall. Capsules help bacteria resist phagocytosis and play a role in pathogenicity, bacterial capsule slideshare. Various staining methods can be used to visualize capsules, which are difficult to stain due to their non-ionic nature.

Bacterial Capsules Read less. Download Now Download to read offline. Recommended Introduction to streptococcus and a brief review on its species. Introduction to streptococcus and a brief review on its species Bandita Panigrahi. Bohomolets Microbiology Lesson 1. Bohomolets Microbiology Lesson 1 Dr. Ft presentation.

Bacterial capsule slideshare

Capsule of bacteria , composition ,function of capsule etc. Read less. Download Now Download to read offline. Recommended Bacterial cell wall. Bacterial cell wall Ashfaq Ahmad. Fimbriae and pili. Flagella microbiology Notes. Classification of bacteria. Microbial flora-of-the-human-body. Microbial flora-of-the-human-body Aman Ullah. Bacteria, Bacteria Structure. Bacteria, Bacteria Structure Umesh Maskare. Structure of bacterial cell. Structure of bacterial cell gohil sanjay bhagvanji.

Ppt flagella seminar Archa Dave. The bacterial capsule serves as a shield, giving protection from toxins, and from drying out. Gram staining.

The bacterial capsule is a large structure common to many bacteria. It is a well-organized layer, not easily washed off, and it can be the cause of various diseases. The capsule—which can be found in both gram negative and gram-positive bacteria —is different from the second lipid membrane — bacterial outer membrane , which contains lipopolysaccharides and lipoproteins and is found only in gram-negative bacteria. When the amorphous viscid secretion that makes up the capsule diffuses into the surrounding medium and remains as a loose undemarcated secretion, it is known as a slime layer. Capsule and slime layer are sometimes summarized under the term glycocalyx.

Some bacterial cells are surrounded by a viscous substance forming a covering layer or envelope around the cell wall, called a capsule. Bacterial capsules can be visualized by light microscopy using special staining methods. If the layer is too thin to be seen by light microscopy, it is termed a microcapsule. It is called the slime layer if it is so abundant that many cells are embedded in a common matrix. Capsule also known as K antigen is a major virulence factor of bacteria. The principal pathogens that cause pneumonia and meningitis include Streptococcus pneumoniae, Haemophilus influenzae, Neisseria meningitidis, Klebsiella pneumoniae, Escherichia coli, and group B streptococci have polysaccharide capsules on their surface.

Bacterial capsule slideshare

Capsule of bacteria , composition ,function of capsule etc. Read less. Download Now Download to read offline. Recommended Bacterial cell wall.

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What have we learned so far, in terms of cell layers?

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