To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1. Time-lapse images showing the circulation of loft mutants and sibling embryos at 4 dpf. The loft mutant is on the left and control sibling embryo is on the right. Images were acquired at 100 frame/second for 32 seconds with a 10x air objective of Leica DM5000B microscopy. Proprotein convertase furina is required for heart development in zebrafish Qinchao Zhou, Lei Lei, Hefei Zhang, Shih-Ching Chiu, Lu Gao, Ran Yang, Wensheng Wei, Gang Peng, Xiaojun Zhu, and Jing-Wei Xiong J Cell Sci 2021. 134:None-None; doi: 10.1242/jcs.258432 Download Original Video