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 is a hereditary disorder. It is caused by an abnormal gene. Each cell of the body contains structures called chromosomes. A chromosome is a long chain of chemicals known as DNA. This DNA is arranged into about 25,000 units called genes which determine such things as the colour of a personâs eyes. Each cell contains 46 of these chromosomes arranged in 23 pairs. Von Willebrand disease is caused by a defect on chromosome 12. The defect could be on the chromosome 12 from the mother, on the chromosome 12 from the father, or on both. There are two ways of getting the hereditary form of VWD.