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the deadliest in modern history, infected an estimated 500 million people worldwide
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attentive investigators in Melbourne, London, and Washington, DC soon had the virus in their laboratories
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global outbreak of influenza that originated in China in July 1968 and lasted until 1969–70.
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SARS is an acute viral respiratory illness brought on by a coronavirus
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Eukaryotes have membrane-bound organelles contained within their cell membranes, and include fungi and protists.
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Prokaryotes do not contain these organelles, and include eubacteria and archaebacteria.
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The existence of unseen microbiological life was postulated by Jainism, which is based on Mahavira's teachings as early as 6th century BCE.
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Antonie van Leeuwenhoek (1632–1723) was one of the first people to observe microorganisms, using a microscope of his own design, and made one of the most important contributions to biology.
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In 1876, Robert Koch (1843–1910) established that microbes can cause disease.