There's a half dozen ways we made these particle fields inside of After Effects that you see throughout the spot, but the most rewarding for me is the initial transition from the "cloud" of cells to the human figures. I had a lot of fun developing these particle systems in Cinema 4D with some help from Entae Kim who tracked the character rig to live action footage in Maya. What was incredibly flattering - and had never happened to me before this campaign - was the agency asking for a high-res still of the cell woman on the bicycle for them to use within the print campaign!