Table 1.

Antibodies used in immunohistochemistry.

Antibodies	Dilution	Suppliers
Notch receptor1	1 : 50	R&D System, Minneapolis, MN, USA
Notch receptor4	1 : 50	Cell Signaling, Beverly, MA, USA
Delta-like1	1 : 500	Rockland, Gilbertsville, PA, USA
Delta-like4	1 : 500	Rockland, Gilbertsville, PA, USA
Jagged1	1 : 500	Rockland, Gilbertsville, PA, USA
Hes1	1 : 200	Abcam, Cambridge, UK
Caspase3	1 : 500	Abcam, Cambridge, UK
CD31	1 : 1,000	Abcam, Cambridge, UK
Alexa Fluor 488 goat anti-rabbit IgG	1 : 800	Molecular Probes, Eugene, OR, USA
Alexa Fluor 594 goat anti-mouse IgG	1 : 800	Molecular Probes, Eugene, OR, USA