In 1874, Fanny Angelina married physician and bacteriologist Walther Hesse, an investigator of air quality and, specifically, air-borne microbes. In the Winter of 1880-81, Hesse became a research student with Koch in Berlin and experienced firsthand the difficulty of growing microbes on gelatine and the other growth media used at the time.
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“中国一強”「レアアース」 日本の戦略に密着取材
In less than 25 years this will rise to more than half of the rail network being at risk, according to the government's own figures.