STEMdiff™ Endothelial Differentiation Kit (Catalog #08005) includes attachment substrate, animal component-free (ACF) endothelial induction medium, and endothelial expansion medium. It is optimized for the differentiation of human pluripotent stem cells (hPSCs) maintained in mTeSR™1 (Catalog #85850), mTeSR™ Plus (Catalog #05825), or TeSR™-E8™ (Catalog #05990) on Corning Matrigel to endothelial-like cells. The kit is designed to be used immediately after early mesoderm induction with STEMdiff™ Mesoderm Induction Medium (Catalog #05220), available for purchase separately.CollPlant (https://collplant.com/) is the manufacturer of the rhCollagen component of the cell attachment substrate.