wherein {TAIL ~ the disposable sensing element} is connected to {HEAD ~ a plurality} of similar elements to form a stack, and 
wherein { TAIL ~ the disposable sensing element } is connected to { HEAD ~ a plurality } of similar elements to form a stack , and
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH