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Defence method of body against foreign or harmful agents

Specify two groups of the defence mechanisms of body against the foreign or harmful agents? Specify the difference between them?

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The body has several defence mechanisms against the foreign pathogenic agents. These mechanisms got divided into two groups:

a) The specific mechanisms and

b) The unspecific mechanisms.

The specific mechanisms are the part of immune system and emerge the humoral immune response and cellular immune response which respectively produce the antibodies and defense cells against the specific antigens. The unspecific procedure fight in general manner any type of antigen and in them a series of defence means are incorporated, such as the skin barrier against the foreign agents, the mucous and inflammation, ciliated epithelium of airway, and action of unspecific proteins and defence cells such as, macrophages and interferons.

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