Clearly, two parameters will determine the choice of the methodology: the level of resolution required (low, intermediate, and high) and the clinical setting (i.e., organ or HSC transplantation, HLA-disease associations, bone marrow donor registry screening, and population genetics studies). For solid-organ transplantation where the method has to be fast and of low resolution, PCR-SSP or reverse PCR-SSOP hybridization should be an adequate technique. For high-throughput typing, such as for bone marrow donor registry recruitment or population genetics studies, reverse PCR-SSOP hybridization is well suited, whereas for final stem cell donor matching (high resolution), PCR-SSP/SSOP or RSCA combined with direct sequencing should provide the highest level of resolution.
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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.