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The potent toxins ricin, abrin, and other ribosome-inactivating proteins deadenylate a specific base in 28S ribosomal RNA that destroys ribosomes and leads to cell death. We have taken advantage of the fact that reverse transcriptase preferentially inserts an adenine opposite to an abasic site in RNA to create a quantitative polymerase chain reaction (PCR) assay to detect the damage. This assay detects...
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