{TAIL ~ The compositions} can be injected into {HEAD ~ a patient} and polymerized in situ or can be polymerized ex vivo and implanted 
{ TAIL ~ The compositions } can be injected into { HEAD ~ a patient } and polymerized in situ or can be polymerized ex vivo and implanted
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH