Allergy

A category referring to immune reaction is called an allergy. In the general sense, the reaction of immune system to foreign microorganisms or particles is performed by means of particular anti-bodies production.

The functioning capability of antibodies involves bandage to identifying molecules, as well as antigens. The reaction which takes place between antibody and antigen results in a series of chemical reactions which are performed for body protection from infection.

The same set of reactions is invoked by harmless essence or particles such as pollen, dust and other.

When this takes place, an allergy develops against the harmless particle (an allergen.)