In a direct Coombs' test a special antibody is added to a sample of blood. This test checks whether there are antibodies already bound to the surface of the red blood cell. If the test is positive the antibodies that are added bind to the antibodies on the surface of the cell.
The River Hull is a navigable river in the East Riding of Yorkshire in the north of England. It rises from a series of springs to the west of Driffield, and enters the Humber estuary at Kingston upon Hull.
The Detroit Frontier in 1812. On July 11th 1812, 2,500 American troops under General Hull reached the Detroit River and camped at Fort Detroit. At Amherstburg on the Canadian side of the river were 100 British regulars, 300 militia and 150 Indians led by Tecumseh. Hull crossed the Detroit and made his headquarters in a Canadian farm house.