A flow cell which can be used in the synthesis of DNA probes on an active surface of the substrate includes {HEAD ~ a base} having {TAIL ~ a central window opening} and a registration surface against which the substrate may be mounted 
having
A flow cell which can be used in the synthesis of DNA probes on an active surface of the substrate includes { HEAD ~ a base } having { TAIL ~ a central window opening } and a registration surface against which the substrate may be mounted
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH