1. The first line of defense: includes physical and chemical barriers, such as the skin, mucous membranes, tears, saliva, and stomach acid, that prevent pathogens from entering the body.
2. The second line of defense: involves non-specific immune responses, such as inflammation, fever, and phagocytosis, which help to destroy or eliminate pathogens that have entered the body.
3. The third line of defense: is the adaptive or specific immune response, which is tailored to the specific pathogen that has entered the body and involves T lymphocytes, B lymphocytes, and antibodies.
All three lines are included in the body's defense against disease.
the three lines of defense your body has agaisnts disease include all except
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