Chorionioallantoic branching morphogenesis of E8.5 C57BL/6J control conceptuses. Three-dimensional reconstruction of z-stack confocal images of 100μm thick vibratome sections of E8.5 C57BL/6J control conceptuses immunostained for CD31 (green), CYTOKERATIN (red) and nuclear DAPI (blue). Scale bar = 200μm.