Antibody:	anti-hepsin
Detection system:	Secondary antibody coupled to fluorescein

Structure	Level	Pattern	Image	Note
TS15: embryo	Weak	Widespread		Relatively low level of expression throughout the embryo.

Structure	Level	Pattern	Image	Note
TS21: skin	Weak		4A	Sparce expression in surface ectoderm.

Structure	Level	Pattern	Image	Note
TS24: skin	Present	Regionally restricted	4B	Authors report progressive restriction from epithelium to basal layer of forming epidermis.

Structure	Level	Pattern	Image	Note
TS26: epidermis	Present	Regionally restricted	4C	Authors report progressive restriction from epithelium to basal layer of forming epidermis.

Structure	Level	Pattern	Image	Note
TS24: liver	Present	Diffuse	4D	Diffuse cell-surface staining of hepatic cords.

Structure	Level	Pattern	Image	Note
TS26: intercostal muscle	Present		4E
TS26: rib cartilage	Present		4E

Structure	Level	Pattern	Image	Note
TS28: retina outer plexiform layer	Present	Regionally restricted	4F	Expression in horizontal cells of outer plexiform layer.
TS28: retina outer nuclear layer	Present	Diffuse	4F	Diffuse expression in outer nuclear layer.
TS28: photoreceptor layer	Present		4F	Expression in association with rods and cones.