HIT is caused by the formation of abnormal antibodies that activate platelets. If someone receiving heparin develops new or worsening thrombosis, or if the platelet count falls, HIT can be confirmed with specific blood tests.
For other uses, see Disneyland (disambiguation). Disneyland Park, originally Disneyland, is the first of two theme parks built at the Disneyland Resort in Anaheim, California, opened on July 17, 1955. It is the only theme park designed and built under the direct supervision of Walt Disney.
A new era for roller coaster design In 1955, the nation's first theme park opened: Disneyland. Not only did Disneyland usher in a new era for amusement parks, it also helped bring about some radical changes in roller coaster design. Up until this time, coasters were built out of wood, which limited the way loops could be handled.