Ключевые слова: analytical, bacteria, bacteriology, biology, blue, clulaire culture, color, coloring, contamination, culture media, cylindrical, enssemencement cells, germs, glass, green, health, hospital, laboratory, laboratory research, medical, medicine, microbiology petri dishes, microorganisms, molecule, petri dish, red, research, research biology, round, symbol, symbolic, transparent bacttries, vertical objects medical, visual culture, white, yellow object medical,