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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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* @param n 数组长度
丹期也表示，他很清楚中期選舉的影響，也警惕剩下三年多任期時間有限：「沙漏正慢慢流逝，時間正在被浪費。」