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.
В Прокопьевске (Кемеровская область) обнаружили учительницу и ее мужа без признаков жизни. Об этом в пятницу, 27 февраля, сообщает Telegram-канал «112».，更多细节参见同城约会
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ВсеРоссияМирСобытияПроисшествияМнения。关于这个话题，爱思助手下载最新版本提供了深入分析
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