The flash of a nearby lightning bolt followed by the crack of thunder can't help but make you take notice of the power of nature. And it's a good thing you get that reminder because lightning kills more people than floods, hurricanes or tornadoes.
Collagen: The principal protein of the skin, tendons, cartilage, bone, and connective tissue. Collagen is an essential part of the framework of the design of our various body tissues.ollagen: The principal protein of the skin, tendons, cartilage, bone, and connective tissue. Collagen is an essential part of the framework of the design of our various body tissues.
collagen disease, an abnormal condition characterized by extensive disruption of the connective tissue, often involving inflammation and fibrinoid degeneration. Collagen diseases include polyarteritis nodosa, systemic lupus erythematosus, osteoarthritis, and rheumatoid arthritis.ollagen disease. n. Any of a group of inflammatory, often autoimmune diseases affecting connective tissue, including lupus erythematosus, rheumatoid arthritis, polyarteritis nodosa, scleroderma and dermatomyositis. Also called collagenosis, collagen vascular disease.