- Time to upgrade your #16S_rRNA V4 primers! Goodbye Parada et al. 2018 and Apprill et al. 2015. Welcome Hu et al. 2023. Greatly improved coverage for #Patescibacteria/CPR with minimal bias on other known taxa. #MicroSky 🦠🧫 www.biorxiv.org/content/10.1...Oct 30, 2023 11:13