Before agar, microbiologists had experimented with other foodstuffs as microbial media. They turned to substances rich in the starches, proteins, sugars, fats, and minerals that organisms need for growth, testing with broths, bread, potatoes, polenta, egg whites, coagulated blood serums, and gelatine. However, none worked particularly well: all were easily broken down by heat and microbial enzymes, and their surface, once colonized, became mushy and unsuitable for isolating microbes.
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自投入运营以来,“招商伊敦”先后以上海、深圳、天津等为母港,开辟了国内沿海航线,并于2023年执行了中国籍邮轮的首个国际航线,凭借中文服务、精致体验与一价全包模式,成为高端邮轮市场标杆。但受市场环境、运营成本、航线结构与消费习惯等多重因素影响,船舶长期面临盈利压力,运营效益未达预期。,更多细节参见heLLoword翻译官方下载
Ранее стало известно, что Владимир Путин поручил активнее привлекать участников специальной военной операции (СВО) к разработке, производству, эксплуатации и обслуживанию беспилотных технологий.
,详情可参考safew官方版本下载
Жители Санкт-Петербурга устроили «крысогон»17:52
圖像加註文字,中國的中老年人已經是一個龐大的互聯網群體2026年2月12日。关于这个话题,搜狗输入法2026提供了深入分析