Figure S4.
E-cadherin and P-cadherin are present in the lip epithelium throughout the fusion process. Immunofluorescence on control sections of the prefusion (6–8ts, n = 2 for E-cad, n = 3 for P-cad), early fusion (9–11ts, n = 5 for each), fusion (16–18ts, n = 2 for each), and late fusion (20–21ts, n = 4 for E-cad, n = 2 for P-cad) junction detects both E-cadherin and P-cadherin. MNP, medial nasal process; LNP, lateral nasal process. Scale bar, 20 μm.