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D3767-1headline bar  An ARS technician prepares to freeze germplasm samples **Image Number D3767-1** ARS animal technician Scott Spiller prepares to freeze animal germplasm samples in a programmable freezer. Samples are placed in the freezer at -5° C and frozen in 4 minutes to -140° C.  Photo by Peggy Greb.  640 pixels wide: (D3767-1.jpg)   Please visit our Image Gallery.


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