By WWII, scientists had already begun looking at alternative gelling substances for routine use in bacteriology, but concluded that agar was still better as it is both firmer and easier to handle. Today, some specialized microbiology applications use the colloid carrageenan (extracted from red seaweed Chondrus crispus, or “Irish Moss”), a more transparent and less auto-fluorescent alternative to agar (agar emits its own background fluorescence when excited by light). However, for routine bacteriological use, carrageenan is more difficult to dissolve, requires higher concentrations, can degrade at high temperatures, and forms weaker gels, which may result in puncturing its surface during the plating of cells.
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有趣的是，Infigratinib最初于2021年获批用于胆管癌，后因适应症开发策略调整而主动撤回。如今，其有望在ACH赛道迎来“第二春”。基于其疗效和口服便利性，BridgeBio在今年的JPM大会上预测，该药Infigratinib将占据ACH治疗市场50%以上的份额。，推荐阅读91视频获取更多信息
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