Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.
我选择「面向需要在团队内推广 Claude Code 的负责人」生成 PPT，最后生成质量也很不错，内容详尽、元素丰富、排版多样，但是最终导出的 PPT 排版有少量混乱，需要手动微调。
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Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04