<Li> The factors, including toxins, hemolysins, and proteases, bring damage to the host . </Li> <P> Bacteria produce various adhesins including lipoteichoic acid, trimeric autotransporter adhesins and a wide variety of other surface proteins to attach to host tissue . </P> <P> Capsules, made of carbohydrate, form part of the outer structure of many bacterial cells including Neisseria meningitidis . Capsules play important roles in immune evasion, as they inhibit phagocytosis, as well as protecting the bacteria while outside the host . </P> <P> Another group of virulence factors possessed by bacteria are immunoglobulin (Ig) proteases . Immunoglobulins are antibodies expressed and secreted by hosts in response to an infection . These immunoglobulins play a major role in destruction of the pathogen through mechanisms such as opsonization . Some bacteria, such as Streptococcus pyogenes, are able to break down the host's immunoglobulins using proteases . </P>

Discuss the virulence factors elaborated by pathogenic microorganisms