Widefield confocal scanning is the imaging method of choice for microarrays. A confocal scanner rejects light from above and below the focal plane, thus rejecting fluorescence from the microarray substrate or from the aqueous buffer solution that is in contact with the array in some microarray formats. This article describes the principle of widefield confocal imaging and shows how this imaging technique fits the requirements for reading genetic and protein microarrays, and for tissue arrays. The sequence of events for reading arrays is described, and examples of both genetic microarray and tissue array images are presented.
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The use of dumbbells gives you a much more comprehensive strengthening effect because the workout engages your stabilizer muscles, in addition to the muscle you may be pin-pointing. Without all of the belts and artificial stabilizers of a machine, you also engage your core muscles, which are your body's natural stabilizers.