"The other very important advancement in the last 5 years, is the development of single-cell regulatory genomes methods, which allow us to look at enhancer usage at a scale that simply wasn’t possible before. This is allowing us to look upstream of RNA, identifying the regulatory elements that are being dynamically used at different stages of embryogenesis. We can basically follow the regulation of a tissue’s development."

https://network.febs.org/posts/eileen-furlong-new-methods-and-concepts-in-one-area-of-biology-can-really-help-to-illuminate-another