medicine, disease, polio, (spinale K., Poliomyelitis anterior acuta), pathogenic germ, polio viruses, pathogenic agent, pathogens, pathogenic germs, pathogenic agents, historic, historical, disease-causing agent, disease agent, virus, Heine-Medin, discovered by Jakob Heine 1840,

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Keywords: 1840, 19th, acuta, agent, agents, anterior, century, discovered, disease, disease-causing, germ, germs, heine, heine-medin, historic, historical, jakob, medicine, microscopic, microscopical, pathogenic, pathogens, polio, poliomyelitis, research, science, spinale, virus