21.   While lasers tend to damage surrounding tissues by creating bubbles in local body fluids, the pure saline jets might make even finer cuts without stressing nearby tissue.

22.   A high concentration of glucose acts like antifreeze in these frogs, blocking the formation of ice crystals in cells that would normally damage tissue.

23.   At high levels, it is a severe irritant that can damage lung tissues and aggravate respiratory problems.

24.   At high levels, especially in summer, it is a severe irritant that can damage lung tissue and aggravate respiratory problems.

25.   Besides the complex, open fracture, Maier suffered lacerations and damaged muscle tissue, and kidney problems emerged during the surgery, the Austria Press Agency reported.

26.   Concussions are caused when a blow rotates and twists the brain in the skull, damaging brain tissue.

27.   Dentists tell us that it can damage gum tissue and be very irritating within the mouth.

28.   Hydrochloric acid causes burns to skin and damages the tissue of the mucous membranes, upper respiratory tract, eyes, and skin, the prosecutor said.

29.   They say that is the best way to reduce levels of ozone, a component of smog that damages lung tissue.

30.   We have an immune system that protects us against infection and yet that immune system damages our tissues.