1
Djerassi Isaac: Apparatus for filtration-leukopheresis for separation and concentration of human granulocytes. Wobensmith 2nd Zachary T, Wobensmith III Zachary T, July 1, 1975: US3892236 (42 worldwide citation)

Apparatus of simple character is provided for continuous withdrawal of blood from a human donor, forced extracorporeal circulation of blood of the donor with separation of granulocytes, and return by gravity of the leukocyte-poor whole blood to the donor.


2
Djerassi Isaac: Apparatus for filtration-leukopheresis for separation and concentration of human granulocytes. Wobensmith 2nd Zachary T, April 9, 1974: US3802432 (35 worldwide citation)

Apparatus is provided for continuous withdrawal of blood from a human donor, separation preferably of granulocytes therefrom by extracorporeal circulation and filtration of the blood and return of leucocyte-poor whole blood to the donor, controls being provided for the flow of the blood within the a ...