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.
“Could it be fatal?” Kim allegedly asked. “Could it kill someone?”，详情可参考币安_币安注册_币安下载
，这一点在搜狗输入法2026中也有详细论述
6 August 2025ShareSave，这一点在搜狗输入法下载中也有详细论述
14:35, 3 марта 2026Мир