ME – also known as Chronic Fatigue Syndrome – has long been one of medicine’s most perplexing conditions. With no definitive diagnostic test and a legacy of scepticism in parts of the medical community, patients have often struggled to be believed. But a surge of new research may finally be shifting the landscape.
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.,详情可参考WPS官方版本下载
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