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.
「我覺得就像每一個進入中國的外國人一樣，因為我喜歡攝影，我很喜歡在中國拍攝辛苦的勞工、地攤市場上的毛澤東畫像、紅色五角星，我得說我覺得我趕在『成為中國人』這個潮流走紅之前就在學習『成為中國人』，」安迪這樣告訴BBC中文，打趣稱在他回國後，很多朋友都問他是否有成為「黨員」、打算作為「間諜」效忠北京。，这一点在Line官方版本下载中也有详细论述
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