Figure 6.

Coalescence and development of embryoid bodies. Day 1: Aggregation of individual ESCs to form spherical bodies (EB = embryiod body). Day 3: EBs ranging from 100–250 μm mean diameter. Day 4: Growing EBs of ~350 μm. Day 9: An EB with a cystic structure. Day 17: EB with outgrowth and vesicular cavity.