Greetings! Thank you for your questions.

For your information, the immune system refers to a collection of cells, chemicals and processes that function to protect our respiratory passages, skin, intestinal tract and other areas from foreign antigens, such as viruses, microbes (bacteria, fungi, and parasites), cancer cells, and toxins. Beyond, the structural and chemical barriers which protect us from infection, the immune system can be viewed as having two ‘lines of defense’, innate immunity and adaptive immunity.

Immunology of human body vary as a consequence of heritable and non-heritable influences, however symbiotic and pathogenic microbes and other non-heritable influences explain most of this variation.

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