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