Callum completed a Master of Biomedical Sciences from the University of Auckland in 2020, working with induced pluripotent stem cells to further develop organoid models of human renal development and pathology. He has experience with 2D and 3D mammalian cell culture, tissue analysis and directed differentiation. Callum joined the Riddet Institute in late 2020, and is currently supporting in vitro fermentation studies and interactions with the human gut microbiome.