An enhanced giant magnetoresistive device, and a method of manufacturing the same. A first endwall extends generally perpendicularly from the playing surface and has a first wall length. The invention also provides for polynucleotides and vectors wherein a gene of interest is fused in frame to at least two tag sequences, for example, a streptavidin binding peptide sequence and a calmodulin binding peptide sequence. The uppermost nozzle is located in the region of the surface of the water and produces a stream of water or fan of water lying in the surface of the water.