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Elm tree
A 200-year-old elm tree stands in front of City Hall in Perth Amboy, New Jersey. (NJ Dept. of Environmental Protection, D3729-1)
Elm tree seeds
ARS scientists hoped to cryopreserve seeds from the old elm tree, but the seeds were infertile. (NJ Dept. of Environmental Protection, D3730-1)
Elm tree branch
This winter, ARS scientists will attempt to cryopreserve elm twig cuttings. (NJ Dept. of Environmental Protection, D3731-1)
Cryopreserved tubes containing tree buds
Tubes containing cryopreserved tree buds. (Lisa Hill, D3732-2)
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