Ключевые слова: analyzing, backgrounds, beaker, biology, biotechnology, blue, bottle, campus, chemical, chemistry, chemistry class, classroom, closeup, color image, colors, concentration, cut out, defocused, development, discovery, education, equipment, examining, experience, experiment, exploration, glass material, healthcare and medicine, horizontal, laboratory, lesson, liquid, medical research, medical test, medicine, microbiology, mixing, multi colored, no people, red, research, science, scientific experiment, technology, test tube, transparent, tube, work tool, yellow,