It is difficult to know exactly when the shift from gelatine to agar occurred. As often happens for scientific breakthroughs, agar was likely adopted incrementally alongside the use of other growth media. In 1913, for example, the first diagnosis of Serratia marcescens as a human pathogen was made by growing it on agar as well as on potatoes.
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Мощный удар Израиля по Ирану попал на видео09:41
BMA resident doctors committee co-chairs Dr Ross Nieuwoudt and Dr Melissa Ryan said: "We have agreed a window for negotiations, which we hope the government will use wisely.