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Crime scene or nature reserve?

f the DNA samples, the researchers filed cards containing samples of bird blood in a box that they kept in a laboratory cupboard. Four years later, they successfully amplified DNA from these cards, demonstrating that, even though the temperature fluctuated between 18C and 42C, this treatment did not cause the samples to degrade significantly.

The researchers suggest that DNA on these cards can be transported cheaply, by mail or in hand luggage, whereas 'fresh' samples would require refrigeration and dedicated transport systems. They comment: "The ease of transport and storage of samples dried on paper makes it practical for researchers to acquire large reference collections throughout their careers, just as they acquire large collections of printed references." "I have between 500 and 100 samples stored in a card file on my desk," said Smith.


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Contact: Gemma Bradley
press@biomedcentral.com
44-207-323-0323
BioMed Central
7-Apr-2004


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