Four fundamental biological functions are responsible for bacterial pathogenicity in a multi-cellular host organism: The adhesive function, the function of invasion and penetration into the cell, the function of evasion of host defense and the damage function. The action of the first three of them (adhesion, invasion and evasion) is directed to towards establishing an ecological niche in Multicellular host, while the aim of the damaging function is destruction of this environment.
Yurii V. Ezepchuk
The Gamaleya Institute for Epidemiology and Microbiology, Moscow, Russia and National Jewish Medical and Research Center, Denver, Colorado, USA.
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