| http://www.w3.org/ns/prov#value | - In some embodiments, the quencher is a peptide of at least 3 amino acids, such as about 3-10 amino acids, also about 3-6 amino acids, wherein at least one of the amino acids is cysteine, N-acetyl cysteine, S-acetyl cysteine, or other suitable derivative of cysteine.
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