When the metal coating is punctured or scratched, the capsules in the damaged area burst and ooze restorative liquids, in the form of compounds called trivalent chromates.

"There are some signals, " Papakostas says."The problem thus far is that if you looked at a single element, a single marker or disease area, the signal was weak."

One side may be due to emotional control, angry wounding impulse to appear loss.