Generally, the panel of substrate material 18 is mounted on a table 20, which positions the substrate underneath the opening 13 to form {HEAD ~ wells} in {TAIL ~ a desired pattern} in response to movement of the table, responsive to a control means  
Generally , the panel of substrate material 18 is mounted on a table 20 , which positions the substrate underneath the opening 13 to form { HEAD ~ wells } in { TAIL ~ a desired pattern } in response to movement of the table , responsive to a control means
OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH