It is difficult to know exactly when the shift from gelatine to agar occurred. As often happens for scientific breakthroughs, agar was likely adopted incrementally alongside the use of other growth media. In 1913, for example, the first diagnosis of Serratia marcescens as a human pathogen was made by growing it on agar as well as on potatoes.
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他们手上只有三条线索：杜耀豪外祖父的名字“许桐芝”，外祖母的名字“林秋婵”，外祖母弟弟的名字“林木通”。后两个名字指向同一个地点，澄海区隆都镇鹊巷村。而外祖父的信息则模糊得多，只有名字，没有具体籍贯。在这个千余人的林姓村落旁，散落着四个许姓乡村，寻找如同大海捞针。。同城约会对此有专业解读