Nickel: the essentials. Nickel is found as a constituent in most meteorites and often serves as one of the criteria for distinguishing a meteorite from other minerals. Iron meteorites, or siderites, may contain iron alloyed with from 5 to nearly 20% nickel. The USA 5-cent coin (whose nickname is nickel) contains just 25% nickel.
Common symptoms of VWD are: â¢ easy bruising. â¢ bleeding from nose and gums. â¢ prolonged bleeding from skin lacerations. â¢ bleeding from the gums when baby teeth fall out or after tooth extractions. â¢ heavy or prolonged bleeding during menstruation, called menorrhagia.
von Willebrand disease (VWD) is the most common bleeding disorder, with a prevalence of up to 1%. VWD is caused by either a quantitative or qualitative defect of von Willebrand factor (VWF), which mediates platelet adhesion by binding to the GP1b platelet glycoprotein and to collagen on injured blood vessels.