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.
По ошибке освобожденный насильник сбежал из страны и поехал кататься на лыжахВ Великобритании насильник, освобожденный по ошибке, уехал кататься на лыжах
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"But there are also places where it makes no sense at all," she says.