A buoy system that may include {TAIL ~ a first buoy portion} and {HEAD ~ a second buoy member} operably interconnected may be used to form at least three fractions from a sample during a substantially single centrifugation process 
A buoy system that may include { TAIL ~ a first buoy portion } and { HEAD ~ a second buoy member } operably interconnected may be used to form at least three fractions from a sample during a substantially single centrifugation process
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH