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.
He's been signed by Republic Records, the home of Taylor Swift, The Weeknd and Ariana Grande. In the studio, one band of successful US musicians co-wrote, recorded and produced his songs, while a new live band are with him on tour. (The US collaborators, incidentally, also worked on the new single by Dave Grohl's daughter Violet.)
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In the latest financial year since then, the company expects to make a profit of between £2.9bn and £3.1bn.