Both of the siRNA and shRNA can be delivered to {HEAD ~ the cells} in {TAIL ~ any way} known or commonly used in the art 
in
Both of the siRNA and shRNA can be delivered to { HEAD ~ the cells } in { TAIL ~ any way } known or commonly used in the art
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH