Chemically synthesized DNA has become an indispensable tool for molecular biologists in the fields of medicine, diagnostics, agriculture, and biological research. Today, chemically synthesized DNA in the form of probes, primers and other oligonucleotides are used in a variety of applications such as PCR, genome sequencing, SNP genotyping, and gene synthesis. While oligonucleotides, or oligos, have become commonplace in these applications, they should not be viewed as a commodity. Rather, they represent critical components providing the molecular mechanism for a biochemical event.
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