Ключевые слова: african, analysis, attractive, background, beautiful, biotechnology, chemical, chemist, chemistry, doctor, emotional, equipment, experiment, face, female, funny, glass, hand, happy, health, isolated, lab, laboratory, lady, liquid, looking, medical, medicine, nurse, people, person, portrait, professional, research, science, scientific, scientist, student, technology, test, tube, veterinarian, white, woman, women, work, young,