lab assistant takes a man’s saliva sample from his mouth for DNA analysis, open mouth close-up, concept of police investigation, medical examination, paternity

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analysis biochemistry chemical chemistry clinical coat complexity concentration confidence coronavirus covid-19 crime dna doctor equipment evidence examination experiment face flu genetic intelligence investigation lab laboratory liquid medical medicine molecules mouth mucous paternity pharmaceutical pipette professional research saliva sample samples science substance suspect technology test trust virus
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  • Published on Nov 09, 2022
  • Photo type JPG
  • Category People