By WWII, scientists had already begun looking at alternative gelling substances for routine use in bacteriology, but concluded that agar was still better as it is both firmer and easier to handle. Today, some specialized microbiology applications use the colloid carrageenan (extracted from red seaweed Chondrus crispus, or “Irish Moss”), a more transparent and less auto-fluorescent alternative to agar (agar emits its own background fluorescence when excited by light). However, for routine bacteriological use, carrageenan is more difficult to dissolve, requires higher concentrations, can degrade at high temperatures, and forms weaker gels, which may result in puncturing its surface during the plating of cells.
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themselves. SRI and, later, their chosen manufacturing partner General Electric
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行业应该先“收敛”到标准硬件构型，比如至少上半身双臂可以达到共识。再解决不同负载、节拍的泛化问题，而不是总用新构型解决问题。，更多细节参见旺商聊官方下载