Agar is so critical that since WWII, scientists have tried to find alternatives in the event of a supply chain breakdown, especially as recent shortages have caused similar alarm. But while other colloid jellies have emerged, agar remains integral to laboratory protocols because no alternatives can yet compete on performance, cost, and ease of use.
到了20世纪20年代，在宜昌三峡西陵峡口，一位英国植物爱好者发现了3000多亩天然野生蜡梅。他将蜡梅制作成标本，向国际传播，宜昌蜡梅被世界所知，我国是蜡梅原产地也得到证实。
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