Ключевые слова: background, biology, biotechnology, chemist, chemistry, closeup, colored, discovery, education, equipment, ethnicity, examining, experiment, expertise, eye, glove, healthcare, horizontal, instrument, isolated, laboratory, life, macro, medical, medicine, metal, microbiology, microscope, no, objects, occupation, operating, optical, people, person, pharmacy, protective, research, sample, science, scientific, scientist, shot, slide, studio, technician, technology, test, tube, workwear,