[Answer] What are some mechanisms used to Evade host defenses?

Answer: Iron, capsule, enzymes, antigenic variation, destroying the cells
What are some mechanisms used to Evade host defenses?
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Pseudomonas aeruginosa an extracellular opportunistic pathogen utilizes two major mechanisms to evade the host defence system. One of these mechanisms is the production of a large number of extracellular products such as proteases toxins and lipases.
Antigenic variation allows pathogens to escape from immunity. One way in which an infectious agent can evade immune surveillanceis by alteringits antigens; this is particularly important for extracellular pathogens against which the principal defense is the production of antibodyagainst theirsurface structures.
In this review we highlight and compare some of the many molecular mechanisms that bacterial and viral pathogens use to evade host immune defenses . Publication types Research Support Non-U.S. Gov’t
Viruses can evade host defence responses through the modulation of MHC molecules. T cells and NK cells recognise antigen presented in small fragments by MHC molecule. Once activated NK cells and Cytotoxic T cells kill cells infected with virus. Epstein-Barr virus interferes with pro…

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