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也是因为上述种种，我们最终决定，让狗留京过年，找一家机构寄养几天。
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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.
She added: "If we adopted a more rational approach we could have the benefits of growth from AI, focus our attention on exporting the clean tech the rest of the world needs, and protecting nature here and abroad."