Paper can be found at: https://www.frontiersin.org/articles/10.3389/fimmu.2021.730825/full
What’s cool about this paper: They developed a single-cell RNA sequencing (scRNA-seq) pipeline for in vivo characterization of barcoded rAAV pools at high resolution. They were able to faithfully identify cell-type specific tropisms in a pool of up to 7 variants simultaneously, paving the way for future highly multiplexed screens.