Ключевые слова: analysis, background, biochemistry, biotechnology, blurred, chemical, chemistry, closeup, color, colorful, development, different, equipment, experiment, fluid, glass, glassware, green, holder, indoors, lab, laboratory, liquid, many, medical, microbiology, nobody, object, pharmaceutical, pharmacy, reagent, red, research, sample, samples, science, scientific, solution, stand, study, substance, technology, test, testtubes, toxic, transparent, tubes, yellow,