Yet more particularly, the exemplary age regulatory element 5′ has been discovered to regulate {HEAD ~ stable gene expression} over {TAIL ~ time} in vivo, while the exemplary age regulatory element 3′ has been discovered to regulate increased gene expression over time in vivo 
over
Yet more particularly , the exemplary age regulatory element 5′ has been discovered to regulate { HEAD ~ stable gene expression } over { TAIL ~ time } in vivo , while the exemplary age regulatory element 3′ has been discovered to regulate increased gene expression over time in vivo
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH