{HEAD ~ The antibody coated beads} may be placed in {TAIL ~ a gradient fashion} such that each layer binds to and selects a subset of cells from the entire sample population 
placed in
{ HEAD ~ The antibody coated beads } may be placed in { TAIL ~ a gradient fashion } such that each layer binds to and selects a subset of cells from the entire sample population
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH