Movie 4.

Nm ionocytes in a 4 dpf dll4 sibling. Time-lapse of a dld:H2B-EGFP;cldnb:H2A-mCherry transgenic larva shows a mature Nm ionocyte pair over the course of 32 hours. Scale bar = 10 μm. Gamma was changed in the dld:H2B-EGFP channel to allow for visualization of dim structures.