Ключевые слова: background, beads, beaker, biology, biotechnology, blue, bulb, chemical, chemistry, color, colorant, coloring, drop, dye, dyed, element, equipment, experiment, glass, glassware, granule, granules, industry, instrument, lab, laboratory, liquid, material, medical, medication, medicine, particle, pattern, pharmaceutical, pharmacology, pigment, plastic, polymeric, polypropylene, red, research, science, scientific, substance, technology, test, thermoplastic, transparent, tube, tubes,