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Glossary

GC content

The percentage of an oligo's bases that are guanine or cytosine, a strong influence on binding strength.

GC content is the fraction of an oligo's bases that are guanine or cytosine. Because G and C pair with three hydrogen bonds rather than two, higher GC content generally raises melting temperature and binding stability.

Balanced GC content, usually around forty to sixty percent, is a common target in primer and probe design.

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