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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Cambridgeshire county and district councils will collaborate on the system which will identify those not claiming benefits they are entitled to and notify eligible families not receiving free school meals.
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В Финляндии предупредили об опасном шаге ЕС против России09:28
arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.，推荐阅读91视频获取更多信息