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Close-up of tweezers loading test tubes with sampled DNA for polymerase chain reaction. Blue toned image

Stock Photo:
Image ID: 104108189
Release Information: N/A
500x334 6.9"x4.6" (72dpi) 135 KB
1000x667 3.3"x2.2" (300dpi) 434 KB
5440x3627 18.1"x12.1" (300dpi) 5.8 MB
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