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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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Our effect pipeline handles the Success and Failure cases automatically. If a function returns Success, the subsequent function in line will be called. In the case of a Failure, the pipeline terminates.,详情可参考Line官方版本下载