Innate immunity leads to nonspecific defense mechanisms that come into action instantly or within hours of an antigen's presence in the body. These mechanisms constitute physical limitations such as skin, substances in the blood, and immune system cells that invade foreign cells in the body.
Flu Test Rapid Flu Test Influenza Rapid Antigen Test, Type A and B Antigen Detection H1N1 Rapid Influenza Diagnostic Test Influenza Viral Culture Influenza Virus by PCR
