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Female chemist adds drops of blue substance into test tubes, lab research
Scientist dripping sample into test tube in laboratory, closeup. Medical research
Close up shot of female doctor scientist holding glass test tube with blue liquid providing experiment to detect virus, pharmacist working on vaccine against COVID-19, cure concept
Lab worker holding blue liquid tube measuring acidity level, scientific research
Doctor filling syringe with medication in clinic, focus on hand. Vaccination and immunization
Lab worker holding tube with liquid, checking transparency, medical research
Lab worker holding water sample in test tube, analyzing minerals concentration
Laboratory assistant pouring green liquid into test tube, organic products
Lab worker dripping yellow liquid in test tube, oil quality control, experiment
Female intern mixing blood with reagent in tube, biochemical experiment
Laboratory worker holding test tube with blue liquid, conducting experiments
Laboratory worker taking green powder sample from petri dish, experiments