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.
Confidence votes 182. A deficiency disease is caused by lack of some nutrient, or essential component for proper bodily functioning. It means that an individual is not getting some really important vitamin or mineral.This can lead to severe consequences for growth, health, or proper bodily activities.onfidence votes 182. A deficiency disease is caused by lack of some nutrient, or essential component for proper bodily functioning. It means that an individual is not getting some really important vitamin or mineral.