However, the inclusion of a human gamma constant region on {TAIL ~ a transgene} is not required to achieve {HEAD ~ such maturation} 
However , the inclusion of a human gamma constant region on { TAIL ~ a transgene } is not required to achieve { HEAD ~ such maturation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD