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.
Что думаешь? Оцени!
，更多细节参见旺商聊官方下载
FT Videos & Podcasts
Yesterday, Axios reported that Hegseth gave Anthropic a deadline of 5:01 PM on Friday to agree to the Pentagon's terms. At the same time, the DoD requested an assessment of its reliance on Claude, an initial step toward potentially labelling Anthropic as a "supply chain risk" — a designation usually reserved for firms from adversaries like China and "never before applied to an American company," Anthropic wrote.，推荐阅读同城约会获取更多信息
Жители Санкт-Петербурга устроили «крысогон»17:52
quite a legacy: now you know the reason that so many later ATMs ran OS/2. IBM,。关于这个话题，51吃瓜提供了深入分析