Microarrays vary from the conventional formats of cDNA and oligonucleotide arrays to arrays now incorporating nanotechnology. The types of molecules and substances printed onto arrays also vary, and examples are cDNA probes, proteins, chemicals, cells, tissue slices, and nanomaterials. The easiest format for any investigator to use in their own laboratory from start to finish is the cDNA microarrays, which has been described in detail here. Several options need to be considered before starting and these choices include the printing substrate and its modification, the type of macromolecule and its modification, and the actual printing process. Very soon the newer formats of arrays may supercede the conventional ones emphasizing the need for more efficiency and less cost and continuing the revolution of compound discovery and development and finding disease cures.
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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.