Antigens is the term for molecules that are foreign to the body.
Everything that is not part of the body is technically foreigh to the body.
Antigens
antigen
Leukocytes
Leukocytes
Foreign substances would suffice as well as contaminants, toxins, etc.
It protects the body from foreign substances and pathogenic organisms by producing the immune response. <a href="http://www.tedthomas.com/">tax deeds for sale</a>
antigens
to protect the body from foreign substances
Immune system
To rid your body of foreign substances in your nose,
Recycled or Replaced.
antibodies
The body's defense system is the immune system.
no