- The immune system is the strongest protective system in the human body. It protects against microorganism violation and keeps us safe.
- Immunology is a branch of biology that is concerned with the immune system’s complex body functions.
- The capacity to respond with antigens or pathogens, and to be healthy, is called immunity.
- The immune system is made up of cells, tissues and organs that work together to protect our bodies.
- The system protects the human body in several ways against the trespassing pathogens.
- It functions on the memory-based basis, some are innate, but some are acquired. Therefore, they operate in allergies, autoimmunity and organ transplants.
- White blood cells (WBC) or leukocytes are the most critical cells participating in the immune system and are involved in the elimination of disease-causing organisms or substances.
- Apart from the leukocytes, the defence mechanism also involves lymphoid organs, tissues, and protein molecules antibodies.