{TAIL ~ Yields} of virus like {HEAD ~ particles} derived from those optimized HPV L1 genes are high 
{ TAIL ~ Yields } of virus like { HEAD ~ particles } derived from those optimized HPV L1 genes are high
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH