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Testing for cattle tuberculosis

Testing for cattle tuberculosis

C001/5621

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50.4 MB (2.3 MB compressed)

3397 x 5185 pixels

28.7 x 43.9 cm ⏐ 11.3 x 17.3 in (300dpi)

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Credit

BRUCE FRITZ / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY BRUCE FRITZ / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY

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Editorial use only.

Caption

Testing for cattle tuberculosis. Technician loading an agar gel with Polymerase Chain Reaction (PCR) amplified DNA material from a thermocycler (foreground). PCR is a procedure commonly used in molecular biology that amplifies a sample of DNA to allow it to be sequenced. The sequence is then studied to determine what organism it came from. This will indicate within 3 days whether or not the culture contains Mycobacterium bovis, the bacteria that causes bovine tuberculosis.

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