Ключевые слова: background, biochemistry, chemical, chemically, chemistry, close, closeup, color, colored reagent, colorful, colourful, equipment, experiment, format, glass, glassware, group, horizontal, isolated, lab, laboratory, liquid, medical, medicine, multicolored, nobody, objects, proof, rack, reagent, research, researching, row, science, scientific, set, shot, stinks, studio, study, test, test tubes, testtube, tube, tubes, up, vivid, white,