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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It marks the latest in a series of changes to the way primary care services work. Last year the government ordered GPs to introduce online booking for non-urgent cases, which it said would solve the so-called "8am scramble" to get through on the phone.
Radio 2 head Helen Thomas said the station's presenters were "hugely excited" to be coming to the city, while Stirling Council leader Susan McGill said the event would be a "huge boost" to the city and surrounding region.