The modified complexes retain their ability to stimulate interferon release by the cells but are rendered more vulnerable to {HEAD ~ destruction} within the cells, the modified complexes being significantly less toxic than {TAIL ~ the original complexes} 
The modified complexes retain their ability to stimulate interferon release by the cells but are rendered more vulnerable to { HEAD ~ destruction } within the cells , the modified complexes being significantly less toxic than { TAIL ~ the original complexes }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL