File Name : figure s1.tif

Caption : figure s1. diameter track of cardiac organoids. a) size (diameter) change of the four experimental groups on day 1 and day 7 after seeding in the agarose microwells (****: p-value <0.0001). b) reported final sizes (mean and standard deviation) of the cardiac organoids.

File Name : figure s2.tif

Caption : figure s2. cardiac organoids after harvesting. representative phase-contrast images of the cardiac organoids after being harvested from the agarose microwells.