System for marking {HEAD ~ the locations} of {TAIL ~ imaged tissue} with respect to the surface of the tissue 
System for marking { HEAD ~ the locations } of { TAIL ~ imaged tissue } with respect to the surface of the tissue
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH