This was especially vexing to physician and bacteriologist Robert Koch, who, in seeking to culture his bacteria, “bent all his power to attain the desired result by a simple and consistently successful method,” wrote bacteriologist and historian William Bulloch in his 1938 book, The History of Bacteriology. “He attempted to obtain a good medium which was at once sterile, transparent, and solid” and got some results with gelatine.6 But gelatine is easily digested by many microbes and melts at precisely the temperatures at which the disease-causing microbes Koch wanted to study grow best.
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“哈利斯科州新生代”贩毒集团是墨西哥两大有组织犯罪团伙之一。该团伙不仅长期从事毒品生产与走私，还通过向商户、农业生产者收取“保护费”、盗窃燃油、介入非法采矿、控制资源运输等方式牟取暴利，同时涉足人口走私、跨境偷渡、绑架、武器走私等多个犯罪领域，其头目长期被列为重点通缉对象。此前，美国政府多次宣称，如果墨西哥无法摧毁贩毒集团，美国将单方面采取军事行动达成这一目标。
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