Reporter:	lacZ
	Direct Detection

Structure	Level	Pattern	Image	Note
TS15: head surface ectoderm	Present	Regionally restricted	4A	Expression in first detected in lens primordium of head ectoderm where it contacts the optic cup.
TS15: lens pre-placode	Present		4A

Structure	Cell Type	Level	Pattern	Image	Note
TS17: lens vesicle	lens fiber cell	Present	Regionally restricted	4B

Structure	Cell Type	Level	Pattern	Image	Note
TS20: lens vesicle	primary lens fiber	Present		4C	Expression restricted to lens fiber cells.

Structure	Cell Type	Level	Pattern	Image	Note
TS22: lens fiber	lens fiber cell	Present		4D	Extensive expression in lens fiber cells.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: lens fiber	lens fiber cell	Present		4E	Expression exclusively in lens fiber cells.
TS28: lens epithelium		Absent		4E	No expression in epithelial cell layer.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: lens fiber	secondary lens fiber	Present		4F	Expression exclusively in secondary lens fiber cells.
TS28: lens epithelium		Absent		4F	No expression in epithelial cell layer.