1
Jack D McNeal, Michael L Bell: Axial spin blood separation system and method. Beckman Instruments, William H May, P R Harder, Steven G Roeder, December 29, 1998: US05853600 (56 worldwide citation)

A method for rapid separation of serum or plasma from cells in a whole blood sample uses a cylindrical sample tube having longitudinally-extending internal ribs. A separation gel and the sample are introduced into the tube, and the tube is axially centrifuged so as to form concentric shells of cells ...


2
Mc, Neal Jack D, Bell Michael L: Axial spin blood separation system and method. Beckman Instruments, MAY William H, April 10, 1997: WO/1997/012679

A method for rapid separation of serum or plasma from cells in a whole blood sample uses a cylindrical sample tube having longitudinally-extending internal ribs. A separation gel and the sample are introduced into the tube, and the tube is axially centrifuged so as to form concentric shells of cells ...


3
Mc Neal Jack D, Bell Michael L: Axial spin blood separation system and method. Beckman Instruments, September 17, 1997: EP0794835-A1

A method for rapid separation of serum or plasma from cells in a whole blood sample uses a cylindrical sample tube having longitudinally-extending internal ribs. A separation gel and the sample are introduced into the tube, and the tube is axially centrifuged so as to form concentric shells of cells ...