Ключевые слова: adult, analyzing, beaker, biology, chemical, chemist, chemistry, clinic, clinical, closeup, colleague, discovery, doctor, education, equipment, experiment, expertise, group, health, health care, hospital, indoors, lab, liquid, looking, male, man, medical, medicine, microbiology, microscope, occupation, pharmaceutical, portrait, professional, protective, reagents, research, sample, science, scientific, scientist, serious, solution, team, technician, technology, test, tube, working,