Virus like particles vaccine {HEAD ~ compositions} comprising HPV L1 proteins or their functional relatives produced by using {TAIL ~ those modified genes} 
Virus like particles vaccine { HEAD ~ compositions } comprising HPV L1 proteins or their functional relatives produced by using { TAIL ~ those modified genes }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL