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.
Rickets is a childhood disease that is associated with a vitamin deficiency. According to the Family Doctor website, rickets is a disorder that affects a child's bones, causing them to become soft and fracture easily.Rickets is caused by a lack of vitamin D, although heredity can also play a role in this disease.ist of Vitamin Deficiency Diseases. Numerous diseases are associated with vitamin deficiency. Photo Credit the sad girl image by Yuriy Poznukhov from Fotolia.com. Numerous diseases are associated with vitamin deficiency.