Immune System protects the human body of pathogens
The immune system is a complex system of cells (leukocytes), Protein (antibodies) And organs that act collectively to protect the body from pathogens that cause diseases, detecting and destroying bacteria, viruses, fungi and cancer cells. The immune system is composed of leukocytes, antibodies, thymus, lymph nodes, bone marrow, spleen and skin. The leukocytes are further [...]






