In this episode we talk with Dennis Karthaus of IBA Lifesciences about his early science interests and pursing his PhD. His passion for marine biology eventually led him on a path to study biotechnology, where he now focuses on protein expression and purification. Specifically, tag-based purification that can help researchers increase lab productivity. But, as our guest explains, scientists should consider their specific bottlenecks and applications for the protein of interest, to determine if a tag is right for them.