To provide a technique of the differentiation from a primate embryonic
stem cell into a vascular cell, and techniques using the same. A method
for differentiating a primate embryonic stem cell into a vascular cell,
comprising differentiating a primate embryonic stem cell into a
VEGFR-2-positive and undifferentiated primate embryonic stem cell
marker-negative cell, and if need, further differentiating the resulting
cell, a method of the differentiation into a vascular cell, and a
vascular cell obtained by the method.