The invention finds use for generating {HEAD ~ removable markers}, such as {TAIL ~ removable ink} and removable tags for assays 
such as
The invention finds use for generating { HEAD ~ removable markers } , such as { TAIL ~ removable ink } and removable tags for assays
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH