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.
Definition of âChristmas diseaseâ - English Dictionary. See all translations. uk â /ËkrÉªs.mÉs dÉªËziËz/ us â /ËkrÉªs.mÉs dÉªËziËz/ specialized. âº also haemophilia B a genetic disease in which there is not enough of a substance called factor IX in the blood, so that the person cannot stop bleeding after an injury. (Definition of âChristmas diseaseâ from the Cambridge Advanced Learner's Dictionary & Thesaurus Â© Cambridge University Press)