Ключевые слова: analysis, analyzing, bacteria, barricade, barrier, biochemical, biochemist, biochemistry, camera, caution, chemical, chemist, chemistry, danger, dangerous, diagnostic, discovery, doctor, documenting, examining, experiment, experimenting, glass, glassware, health, healthcare, lab, laboratory, man, medicine, microbes, pharmacy, photos, pictures, research, researcher, sample, science, scientific, scientist, solution, student, taking, tape, test, testing, tube, tubing, virus, warning,