Ключевые слова: biology, chemist, chemistry, closeup, concentrated, concentration, doctor, education, equipment, experiment, expertise, full, girl, group, health, healthcare, indoors, job, lab, laboratory, liquid, male, man, medical, medicine, microbiology, microscope, model, old, people, portrait, professional, property, research, science, scientific, scientist, serious, study, team, technology, tube, view, white, woman, women, work, worker, working, young,