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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《GTA6》的官方营销活动预计将于2026年夏季启动。
习题链接：LeetCode 581. 最短无序连续子数组
“当好中国式现代化建设的坚定行动派、实干家”