Image Number D3754-1
Citrus cultivars are preserved in liquid nitrogen at the ARS National Laboratory for Genetic Resources Preservation for long-term safekeeping. Here, a 1-millimeter citrus shoot tip is placed into a droplet of cryoprotectant solution on a foil strip. The strip will then be plunged into liquid nitrogen.
Photo by Peggy Greb.
640 pixels wide: (D3754-1.jpg)
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