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.
这话说错了——人吃了 40 年的饭都未必有这么聪明。，这一点在搜狗输入法2026中也有详细论述
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「像鬼一樣工作」：台灣外籍移工為何陷入「強迫勞動」處境
"I want to make it clear to those who are trying to take money from the plane involved in this tragedy that this money has no legal value since it has not been issued by the Central Bank and does not have a serial number, and that attempting to use this money is a crime," the Minister of Defence, Marcelo Salinas, said.