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.
graphite_texture: “visible pencil grain”
，详情可参考爱思助手下载最新版本
若想要孩子，這對伴侶唯一的選擇就是等待子宮移植的機會，或是選擇代孕。
Take this as an aspiration for how things could be, not a tutorial or promise.
‘부화방탕 대명사’ 북한 2인자 최룡해의 퇴장 [주성하의 ‘北토크’]