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Vacutainer tubes with blood. Used in Covid-19 detection. 

Empty blood tube with Positive Coronavirus label

Scrabble tiles and smartphone. 
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DNA Genotyping and Sequencing. Technician prepares source samples of DNA for quality-control checks during high-throughput genotyping and sequencing at the Cancer Genomics Research Laboratory, part of the National Cancer Institute's Division of Cancer Epidemiology and Genetics (DCEG).