（一）主要保护对象为自然遗迹的自然保护区，可以在核心保护区建设必要的防护、陈列、展示等设施，开展古生物化石调查发掘以及适度的科普宣传、生态旅游、教育文化体育等公共服务活动；
2026-03-03 00:00:00:0 （1994年10月9日中华人民共和国国务院令第167号发布 根据2011年1月8日《国务院关于废止和修改部分行政法规的决定》第一次修订 根据2017年10月7日《国务院关于修改部分行政法规的决定》第二次修订 2026年2月3日中华人民共和国国务院令第830号第三次修订），详情可参考WPS下载最新地址
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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.
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