Great paper by Laura Piovani on high-quality cell atlases of oyster and polyclad flatworm larvae. Interesting new insights into cell-type diversity, young and old cell-types and evolution. Shell gland transcriptomes make oyster larvae look young. It was a pleasure to collaborate with Telford Lab et al. on this project. https://www.biorxiv.org/content/10.1101/2023.01.04.522730v1