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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As with his mum, dad and other siblings, the strategy has been to keep calm and carry on, and Cruz is going about the business of music with an air of exuberance and fun.
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