The immune system is the body’s biological defense system. The main purpose of the immune system is to identify self from non-self. The immune system identifies and defends the body from non-self proteins, viruses, bacteria, fungi, parasites and other pathogens. Occasionally, the immune system can make a mistake and attack itself, resulting in autoimmune disorders.
The immune system comprises many different cells, organs, and tissues that work together to combat infection, cellular damage and disease. Cells of the immune system include white blood cells, such as macrophages, as well as T and B lymphocytes. The main lymphoid tissues of the immune system are the thymus and the bone marrow.
Thank you for participating in this module. Click below to download the certificate.