VE-CADHERIN is expressed in a subpopulation of SHF cells during murine heart embryonic development on Ε8.5 and E9.5
(A) Stacked confocal microphotographs of a representative whole-mount embryo on E8.5 (somite stage 5) (a and b) phase-contrast image (c), and magnified areas from sections z2–z4 (c). All stacks are presented in Figure S5A and Video S1.
(B) Cryosections of heart development on E9.5, indicative of VE-CADHERIN (green) being expressed in SHF cell populations (ISL1+, red) destined to form future endocardial and pharyngeal endothelial structures. VE-CADHERIN+ cells were shown to co-localize with a subpopulation with MEF2c+ cells (left panel, blue) but not with cTNT+ (blue, center panel) cardiomyocytes or N-CADHERIN (blue, right panel). Arrows depict ISL1+/VE-CADHERIN+ cells. Scale bars, 20 μm.