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Laboratory assistant collects a sample for test with special pipette
Blood sample for coronavirus testing
Putting sample into the test tube
Preparing sample for laboratory testing
Doctor testing samples in flask
Test sample of coronavirus vaccine.
Nurse testing samples in the lab
Testing virus sample in laboratory
Getting Sample for Coronavirus Testing
Male and female scientists looking at plant sample in test tube
Two female scientists monitoring plant samples in test tubes
Young female scientist looking at chemical sample in test tube
Hand holds a test tube containing a test sample
Biochemist testing sample for coronavirus
Young female scientist looking at chemical sample in test tube
Preteen schoolboy in lab coat looking at sample in test tube
Scientist holding DNA gel in front of samples for testing in laboratory
Preteen schoolboy in lab coat looking at sample in test tube
Young male scientist looking at chemical sample in test tube
Researcher in coverall testing liquid sample using test tubes
Preteen schoolboy in lab coat looking at sample in test tube
Female scientists choosing chemical sample in test tube in laboratory
Blood sample in a test tube for covid-19 testing
Female scientist holding up plant samples in test tubes
Young female scientist looking at chemical sample in test tube
Two young scientists holding chemical sample in test tube
Preteen schoolboy in lab coat looking at sample in test tube
Two young scientists holding chemical sample in test tube
Female scientist working with chemical samples in test tubes in laboratory
Doctor preparing patients blood urine and other samples for testing
