Use of the term “isolated” indicates that {TAIL ~ a naturally occurring sequence} has been removed from {HEAD ~ its normal cellular environment} 
Use of the term “ isolated ” indicates that { TAIL ~ a naturally occurring sequence } has been removed from { HEAD ~ its normal cellular environment }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD