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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，更多细节参见搜狗输入法2026
第一百零六条 为了查明案情，需要解决案件中有争议的专门性问题的，应当指派或者聘请具有专门知识的人员进行鉴定；鉴定人鉴定后，应当写出鉴定意见，并且签名。
“要想一想这里是国内生产总值重要还是绿水青山重要？作为水源涵养地，承担着生态功能最大化的任务，而不是自己决定建个工厂、开个矿，搞点国内生产总值自己过日子。”2019年一次座谈会上，习近平总书记谈及保护“中华水塔”三江源的重要性。