51.   The disease causes progressive bone loss, leaving the bones brittle and prone to fractures.

52.   The disease can cause yellowing of the skin from the jaundice produced by liver infection.

53.   The disease causes blisters on the hooves and mouths of animals, which prompts them to stop eating and starve.

54.   The disease causes hundreds of precancerous growths called polyps to form in the intestine, leading almost invariably to colon cancer.

55.   The disease causes the body to attack itself, spawning a wide range of symptoms, from fevers and seizures to intense inflammation of the joints.

56.   The disease has caused widespread environmental and economic damage.

57.   The degenerative neurological disease causes tremors and makes movement difficult.

58.   The disease can cause shortness of breath, chest pain, fevers, night sweats and other symptoms, and can be debilitating or fatal.

59.   The disease causes an imbalance between production and outflow of the clear liquid in the eye, called aqueous humor.

60.   The disease causes pain, swelling and loss of movement when bone rubs against bone after the cartilage has deteriorated.