by Ingrid Fadelli, Medical Xpress Cover art that illustrates “next-generation clonal tracing”: genetic barcodes and high-throughput sequencing can be used to reveal how “simple” cells (spheres in the ground) develop into a range of ”complex” cell types (leafs in the tree) of the brain. Image credit: Lesya Adamchuk (Ella Maru Studio, Inc.). Copyright © 2022...