Prab
Created page with "For the body to be protected against infectious diseases caused by viruses, bacteria, and fungi, a functional immune system is necessary. The immune system is an intricate system of cells, tissues, and organs that cooperate to recognize and eliminate dangerous infections. ==Components of the Immune System== *The immune system is made up of a number of parts, including: *White blood cells: White blood cells, also known as leukocytes, are the main immune system ce..."
