Oscar Castaño Linares is a professor at the University of Barcelona and a researcher at the Institute for Bioengineering of Catalonia in the department of Biomaterials for Regenerative Therapies. Through his research, Oscar has been working with 3D printers to print scaffolds that enhance the growth of blood vessels. These are like homes for cells to inhabit, so they have to be porous, biodegradable, and non-toxic. Like a craftsman learning a trade, Oscar's research has taken him all over the world to learn new techniques, but with the goal of transferring that knowledge to his students and to other scientists. Oscar joins us to share how he can print these biomaterials while describing his path in science that led him to this research. Show notes at: https://laboutloud.com/2026/02/episode-285-biomaterials/