A hydrophobic, porous, oxygen permeable layer is positioned between the reagent layer and {TAIL ~ the support}, such that oxygen can permeate to the layer containing {HEAD ~ oxidase} 
A hydrophobic , porous , oxygen permeable layer is positioned between the reagent layer and { TAIL ~ the support } , such that oxygen can permeate to the layer containing { HEAD ~ oxidase }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD