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D3752-1headline bar  An ARS technician pours liquid nitrogen as she prepares to cryopreserve plant shoot tips**Image Number D3752-1** ARS technician Ashley Shepherd pours liquid nitrogen as she prepares to cryopreserve shoot tips of vegetatively propagated crops, such as citrus, on foil strips.  Photo by Peggy Greb.  640 pixels wide: (D3752-1.jpg)   Please visit our Image Gallery.


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