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Immunology Notes. innate system evolutionary older system first line of defence non-specific resistance
Immunology 
Def'n: the branch of biomedical science concerned with the response of the organism to 
antigenic challenge, the recognition of self from non-self, 
and all of the biological (in vivo), serological (in vitro), and physical chemical 
aspects of immune phenomena 
defence mechanisms include all physical, chemical and biological properties of the organism 
which reduce it's susceptibility to foreign organisms, material, etc. 
functionally these may be divided into those which are stati...