https://explorebiology.org/collections/cell-biology/induced-pluripotent-stem-cells
Understanding the exact role a gene plays in biology or disease is challenging because multicellular organisms, like humans, are complex. Just over thirty years ago a group of scientists made a pivotal discovery that led to the development of an important tool that changed the way scientists could study the role of a single gene and its impact on an entire biological system: the knockout mouse.