Also, damage to {HEAD ~ other semiconductor structures}, such as {TAIL ~ emitters}, is thereby prevented 
such as
Also , damage to { HEAD ~ other semiconductor structures } , such as { TAIL ~ emitters } , is thereby prevented
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH