Upon withdrawing plasma from the incubator, two phases could be observed: a leukocyte-rich upper or supernatant phase and a lower or sediment phase mainly composed of red blood cells and platelets.
Al retirarlo de la incubadora se podían apreciar dos fases: una superior o sobrenadante rica en leucocitos y la inferior o sedimento formado principalmente por glóbulos rojos y plaquetas.