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.
cumulative weight += weights[i]
，更多细节参见safew官方版本下载
palette: “monochrome”
无独有偶！我的一位媒体朋友、作家褚朝新，也收到了秭归果农的恳求，年富力强的他，毫不犹豫地从湖南长沙，踏上了赴湖北秭归的征程。