Probe:

chick FGF8 probe

Structure	Level	Pattern	Image	Note
TS9: primitive streak	Present	Regionally restricted	2A	Expression is stronger in the anterior part.
TS9: anterior visceral endoderm	Present		2A

Structure	Level	Pattern	Image	Note
TS9: primitive streak	Present	Graded	2D	Expression is stronger in the anterior part.
TS9: anterior visceral endoderm	Present		2D

Structure	Level	Pattern	Image	Note
TS9: primitive streak	Present	Graded	2G	Expression is stronger in the anterior part.

Structure	Level	Pattern	Image	Note
TS12: primitive streak	Present		2J
TS12: embryo mesenchyme	Present	Regionally restricted	2J	Expression is in the anterior mesoderm.

Structure	Level	Pattern	Image	Note
TS15: telencephalon	Present	Regionally restricted	2M	Expression is in the commissural plate.
TS15: future hindbrain	Present	Regionally restricted	2M	Expression in the mid/hindbrain boundary region is posterior to the isthmus.
TS15: limb	Present		2M
TS15: tail	Present		2M
TS15: branchial pouch	Present	Regionally restricted	2M	Expression in extreme lateral regions.
TS15: branchial arch ectoderm	Present		2M	Expression in the overlying surface ectoderm of the pharyngeal groove.

Structure	Level	Pattern	Image	Note
TS20: limb	Present		3A
TS20: tail	Present		3A
TS20: hindbrain	Present	Regionally restricted	3A	Expression is in the mid/hindbrain boundary.
TS20: midbrain	Present	Regionally restricted	3A	Expression is in the mid/hindbrain boundary.
TS20: head	Present	Regionally restricted	3A	Expression is in the branchial arches.
TS20: telencephalon	Present	Regionally restricted	3A	Expression is in the commissural plate.
TS20: cerebral cortex	Present		3A
TS20: lung	Present		3A
TS20: metanephros	Present		3A
TS20: stomach	Present		3A
TS20: tail somite	Present		3A

Structure	Level	Pattern	Image	Note
TS20: olfactory epithelium	Present		3D
TS20: oral epithelium	Present		3D
TS20: telencephalon	Present	Regionally restricted	3D	Expression is in the commissural plate and in the medial septal area.
TS20: tongue	Absent		3D

Structure	Level	Pattern	Image	Note
TS20: neurohypophysis infundibulum	Present		3G
TS20: trigeminal ganglion	Absent		3G
TS20: head mesenchyme	Absent		3G	Absent in the mesenchyme of the first branchial arch.

Structure	Level	Pattern	Image	Note
TS20: hindbrain	Present	Regionally restricted	3J	Expression is in the mid/hindbrain boundary.
TS20: midbrain	Present	Regionally restricted	3J	Expression is in the mid/hindbrain boundary.

Structure	Level	Pattern	Image	Note
TS23: hindbrain	Absent		4A	Expression is absent in the mid/hindbrain boundary region.
TS23: midbrain	Absent		4A	Expression is absent in the mid/hindbrain boundary region.
TS23: submandibular gland primordium	Present		4A

Structure	Level	Pattern	Image	Note
TS20: inner ear	Present