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.
intellinews.com
{ 3, 35, 11, 43, 1, 33, 9, 41 },。业内人士推荐safew官方版本下载作为进阶阅读
Ian Gatt of the Scottish Pelagic Fishermen's Association criticised the timing of the announcement, saying progress was being made in quota-sharing negotiations between countries.，详情可参考heLLoword翻译官方下载
2026-02-26 11:00:00。业内人士推荐快连下载安装作为进阶阅读
13 February 2026ShareSave