Capsules increase virulence of some organisms because they pre â¦ vent desiccation, are able to stick to surfaces and provide a mechanism for attachment to tissue such as respiratory epithelial tissue in humans. Capsules are also slippery and often evade a human's immune system by avoiding phagocytosis from certain leukocytes.
Definition of DEFICIENCY DISEASE. : a disease (as scurvy) caused by a lack of essential dietary elements and especially a vitamin or mineral.
Primary immune deficiency (PID) is the name given to chronic illnesses caused by hereditary or genetic defects in the immune system.There are over 150 forms of PID. Some are mild, some are severe. The immune system protects our bodies from germs such as bacteria and viruses that cause infections.rimary immune deficiency (PID) is the name given to chronic illnesses caused by hereditary or genetic defects in the immune system.