Serotypes

Serotyping involves the production of antibodies following the injection of a suitable mammal with the microorganism or a specific extract of the organism. If an organism is non-flagellated then serotyping will be based on the somatic antigens. If the organism is flagellated then serotyping may also be based on the flagella antigens. Three antigenic sites are recognized: somatic (O) (German "Ohne") or body, flagella (H) (German "Hauch") or motility, and K (German "Kapsel"), e.g., Escherichia coli O157:H7. The O antigens are comprised of the O polysaccharides that are on the surface and are heat stabile. The K and H antigens are heat labile. With whole bacterial cells, agglutination methods are used. With soluble antigens such as toxins, precipitin or gel diffusion assays are used.

Food Fanatic

Food Fanatic

Get All The Support And Guidance You Need To Be A Success At A Food Business. This Book Is One Of The Most Valuable Resources In The World When It Comes To Turning Your Love For Cooking Into A Money Maker.

Get My Free Ebook


Post a comment