In such a reagent, {TAIL ~ the liberated nucleic acids} are protected from nuclease degradation by {HEAD ~ the ionic detergent} 
In such a reagent , { TAIL ~ the liberated nucleic acids } are protected from nuclease degradation by { HEAD ~ the ionic detergent }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD