Blood samples in vacutainer tubes waiting to be analysed. The colour of the cap of the vacutainer tube indicates the type of test to be carried out, o

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Blood samples in vacutainer tubes waiting to be analysed. The colour of the cap of the vacutainer tube indicates the type of test to be carried out, or the type of blood in the tube.

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Size: 5150px × 3433px
Photo credit: © PAUL RAPSON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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