Support WBURAfter Months In A Dish, Lab-Grown Minibrains Start Making 'Brain Waves'Play03:41Download AudioJon HamiltonAugust 29, 2019 ShareScientists say pea-size organoids of human brain tissue may offer a way to study the biological beginnings of a wide range of brain conditions, including autism, bipolar disorder and schizophrenia. (Alysson Muotri/UC San Diego Health Sciences)