Alternatively, {HEAD ~ the inactivated HIV particles} may be used to augment {TAIL ~ the immune response} to HIV in an infected individual 
used to augment
Alternatively , { HEAD ~ the inactivated HIV particles } may be used to augment { TAIL ~ the immune response } to HIV in an infected individual
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH