Ключевые слова: 20s, analysis, analyze, background, biotechnology, blue, caucasian, chemical, chemist, chemistry, clinical, college, color, compound, doctor, examining, experiment, expert, female, flask, fluid, formula, glass, glasses, hand, lab, laboratory, liquid, looking, medical, medicine, professional, reaction, research, safety, science, scientific, scientist, serious, structure, student, technician, technology, test, tube, university, white, woman, work, young adult,