Endothelial heterogeneity and plasticity.

Vascular endothelial cells are highly plastic and show great phenotypic heterogeneity. In recent years, emerging technologies have identified a range of novel endothelial phenotypes and functions. In this Special Issue of Angiogenesis, we present a series of papers from leading experts in the field, highlighting the heterogeneity and plasticity of endothelial cells in health and disease.