Congratulations to Yu, who has submitted her PhD Thesis earlier today. Yu, who is co-supervised by Professor Paul Kilmartin and Ivan, conducted biochemical studies to characterise polyphenol oxidase from grapes. Yu was very hardworking during her PhD research, and she also looked after the laboratory, in particular when the group was in Grafton, in her ‘spare’ time. A couple of manuscripts from Yu’s PhD work are currently under review. Well done Yu and thank you for your hard work!