13:21, 27 февраля 2026Россия
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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.
前款第一项、第二项、第三项规定的行为人违反治安管理情节严重、影响恶劣的，或者第一项、第三项规定的行为人在一年以内二次以上违反治安管理的，不受前款规定的限制。。关于这个话题，heLLoword翻译官方下载提供了深入分析