For more on brain organoids and their many applications, check out this episode of Journal Club: "Modeling Mysterious Brain Structures." Host Lauren Richardson talks to Dr. Madeline Lancaster, a Group Leader at the MRC Laboratory of Molecular Biology in Cambridge, about her lab's article in Science describing an organoid model for studying the cerebrospinal fluid and the choroid plexus, and how these organoids can be used to study brain development, evolution, and improve the drug development process.