Fig. 1.

Cultured clusters from MIP-GFP mouse pancreas. a Immediately after digestion, cells are only loosely clustered. b, c Cells at 72 h after digestion before (b) and after (c) COPAS sort. d GFP-positive clusters including whole islets or only containing single GFP-positive cells were collected after COPAS sort. e After COPAS sort and 24 h culture, sorted GFP-negative aggregates attach and spread. f Epithelial monolayer 4 days after COPAS sort. Scale bars, 100 μm