A system for treating {HEAD ~ target cells} with {TAIL ~ both positive and negative ions} comprises a bi polar beam delivery system configured to create and deliver both positive ion beams and negative ion beams 
with
A system for treating { HEAD ~ target cells } with { TAIL ~ both positive and negative ions } comprises a bi polar beam delivery system configured to create and deliver both positive ion beams and negative ion beams
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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