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1983年5月19日，安德烈·塔可夫斯基（左）和法国导演罗伯特·布列松在第36届戛纳电影节上。两人凭影片《乡愁》（塔可夫斯基）和《钱》（布列松）共同获得最佳导演奖 图/视觉中国
However, Koch never credited the Hesses for their discovery of bacteriological agar, perhaps because, at the time, he failed to recognize its importance. Even after he received the insight about agar from the Hesses, Koch stuck with gelatine for years. In 1883-84, during his first medical expedition to Egypt and India to investigate cholera, he tried and failed to grow the cholera bacterium on gelatine media in the hot climate of Cairo (despite using a half-open fridge for incubation), only succeeding in the colder winter of Calcutta.