The present invention is directed to an improved flow cell of the type that may be utilized in {HEAD ~ the synthesis} of {TAIL ~ arrays} of DNA probe sequences, polypeptides and the like, and is particularly adapted to be used with image formers for projecting an array of patterned light onto a substrate held by the flow cell 
The present invention is directed to an improved flow cell of the type that may be utilized in { HEAD ~ the synthesis } of { TAIL ~ arrays } of DNA probe sequences , polypeptides and the like , and is particularly adapted to be used with image formers for projecting an array of patterned light onto a substrate held by the flow cell
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