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