Ключевые слова: agar, analysis, aseptic, autoclave, background, bacteria, bacterium, biochemistry, biology, biotechnology, care, colonies, colony, colony counter, culture, disease, dish, enterovirus, escherichia, experiment, food, gram negative, growth, hand, health, hold in hand, hygiene, infected, infection, isolated, lab, laboratory, macro, media, medical, medicine, microbiology, microscope, petri, plate, research, science, scientific, scientist, species, spread, steak plate, technique, test,