When do peripheral nerves develop? Researchers used "mosaic barcodes" to prove that neural crest cells commit to their identities before migrating from the neural tube.
Summary: Scientists have long believed that embryonic cells “decide” what to become only after migrating to their final locations in the body. However, a new study has overturned this dogma.
By using a “mosaic barcode” system to retrace the genetic h... [8702 chars]