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Biologist Alexander Fleming works in his lab
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Biologist Alexander Fleming works in his lab

Global representation of general medication and vaccination with hands with vial and syringe.
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Global representation of general medication and va...

Male lab technician holds covid-19 virus cell and stop message. Global pandemic
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Male lab technician holds covid-19 virus cell and ...

Hazen and Brown, American Bacteriologists
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Hazen and Brown, American Bacteriologists