Natural
(Non-Specific) Immunity - 1
Characteristics of system
1.First line of
defense against invading antigens
2.Present in all
humans as a product of creation and micro- evolutionary processes
3.They are not
acquired because of exposure to an antigen
4.Lacks the
ability to recognize an antigenic structure
5.Does not have
a memory and is not enhanced by subsequent exposure to antigens
6.Action may be
enhanced by specific (acquired) immune responses
