Teeth could be capable of preserving antibodies for hundreds of years, allowing scientists to investigate the history of infectious human diseases, a new study has found.
Antibodies are proteins produced by the immune system as a natural response to infectious organisms like viruses and bacteria. Their job is to recognise those microbes so that the immune system can attack them and clear them from the body.antibodies extracted from 800 year-old medieval human teeth were found to be stable and still able to recognise viral proteins.
Palaeoproteomics can reach back into deep time with ancient proteins already successfully recovered and identified after preservation in 1.7-million year old dental enamel from an ancient rhinoceros and an ostrich eggshell more than 6.5 million years old. In this new study, the authors also found preliminary evidence that, like the medieval human teeth, mammoth bones nearly 40,000 years old appear to preserve stable antibodies.
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