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.
{"role": "user", "content": "make it red"}
，推荐阅读WPS下载最新地址获取更多信息
这对于麦当劳来说，仍然是个艰巨的任务。虽然，根据麦当劳此前公布的数据显示，有超五成门店布局三至五线城市，但麦当劳在中国版图上的布局存在较为严重的“偏科”，存在“东重西轻、南重北轻”的偏好。这也就意味着，想要更全面深入的拓展全国市场，对于其管理能力、供应链建设都提出了较大的考验。。业内人士推荐Safew下载作为进阶阅读
圖像來源，Getty Images