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.
Definition of Hull. 1  1 or in full Kingston upon Hull \ËkiÅ-stÉn\play city and port on the Humber River in eastern Englandpopulation 242,200. 2  2 former town in southwestern Quebec, Canada, on the Ottawa River âHull is now part of the town of Gatineau.