In {HEAD ~ one aspect} of {TAIL ~ the invention}, an integrated assembly useful in, e.g., sample analysis systems, may be constructed according to the invention wherein complementary microstructures are formed by an etching or similar process in a planar substrate 
of
In { HEAD ~ one aspect } of { TAIL ~ the invention } , an integrated assembly useful in , e.g. , sample analysis systems , may be constructed according to the invention wherein complementary microstructures are formed by an etching or similar process in a planar substrate
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH