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.
铁路部门表示，陈某于 2 月 19 日提交厦门（厦门北）至宜兴的候补订单，并在 2 月 22 日自行购买了另一趟 G1656 次车票，但未取消候补。
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能力提升是全方位的，可以完整的复述今天在幼儿园一天都做了什么，就算表达有点逻辑颠倒，但引导她顺序以后，能很好的理解并且重新复述。
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