My first post in Bluesky: Mesodermal lineage tracing (green) in embryonic mouse hearts. Tg(Mef2c-AHF-Cre) and Mesp1-cre lines were used above and below, respectively, to trace mesodermal cells (green) at E9.5 (left) and E14.5 (right) stages. #science #heart #development #artwork #biology