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.
Location of Hull on a map. Hull is a city found in England, The United Kingdom. It is located 53.74 latitude and -0.34 longitude and it is situated at elevation 8 meters above sea level. Hull has a population of 302,296 making it the 11th biggest city in England. It operates on the BDST time zone, which means that it follows the same time zone as London.