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，更多细节参见搜狗输入法2026
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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Cluster & Border Point Definition: The map is divided into clusters, and border points are identified using the Ford-Fulkerson based method.