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 primary coordinate point for Hull is located at latitude 30.1472 and longitude -94.6426 in Liberty County. The formal boundaries for the Hull Census Designated Place (see map below) encompass a land area of 1.99 sq. miles and a water area of 0.02 sq. miles. Liberty County is in the Central time zone (GMT -6).