Probe:

Shh probe58

Structure	Level	Pattern	Image	Note
TS12: head	Present	Regionally restricted	3B	Expression in chordamesoderm, which forms the head process and notochord.
TS12: notochord	Present		3B	Expression in chordamesoderm, which forms the head process and notochord.
TS12: primitive streak	Present	Regionally restricted	3B	Expression in the node.

Structure	Level	Pattern	Image	Note
TS13: future midbrain floor plate	Present		3D	Expression commences in the ventral midbrain in a region thought to be analogous to the floor plate.
TS13: foregut diverticulum	Present		3D

Structure	Level	Pattern	Image	Note
TS13: notochord	Present		3F	Expression persists in axial mesoderm.
TS13: future midbrain floor plate	Present		3F	Expression commences in the ventral midbrain in a region thought to be analogous to the floor plate.

Structure	Level	Pattern	Image	Note
TS14: floor plate	Strong		3H
TS14: rhombomere	Present	Regionally restricted	3H	Expression restricted to the ventral midline cells of the rhombomeres.
TS14: foregut	Present		3H
TS14: hindgut diverticulum	Present		3H

Structure	Level	Pattern	Image	Note
TS14: gut epithelium	Present			Expression in endoderm only.
TS14: gut mesenchyme	Absent			Expression in endoderm only.

Structure	Level	Pattern	Image	Note
TS17: floor plate	Present		3J	Expression limited to floor plate and notochord.
TS17: notochord	Present		3J	Expression limited to floor plate and notochord.
TS17: diencephalon	Present	Regionally restricted	3J	Expression in the diencephalon expanding lateral from the ventral midline.

Structure	Level	Pattern	Image	Note
TS12: head	Present	Regionally restricted	4B	In the presomitic region, expression in chordamesoderm, which forms the head process and notochord.
TS12: notochord	Present		4B	In the presomitic region, expression in chordamesoderm, which forms the head process and notochord.

Structure	Level	Pattern	Image	Note
TS15: tail	Present	Regionally restricted	4D	In the presomitic region, expression in chordamesoderm, which forms the head process and notochord.
TS15: notochord	Present		4D	In the presomitic region, expression in chordamesoderm, which forms the head process and notochord.

Structure	Level	Pattern	Image	Note
TS15: trunk	Present		4F

Structure	Level	Pattern	Image	Note
TS21: gut	Present		5B
TS21: skin	Present	Regionally restricted	5B	Central domain of expression in hair and whisker follicles.
TS21: vibrissa follicle	Present	Regionally restricted	5B	Central domain of expression in hair and whisker follicles.
TS21: forelimb digit pre-cartilage condensation	Absent		5B	No expression in digital condensations.

Structure	Level	Pattern	Image	Note
TS21: gut epithelium	Present		5D	Expression in gut limited to endoderm.
TS21: gut mesenchyme	Absent		5D	Expression in gut limited to endoderm.

Structure	Level	Pattern	Image	Note
TS21: brain	Present	Regionally restricted	5F	Expression along the zona limitans itself.

Structure	Level	Pattern	Image	Note
TS17: forelimb bud mesenchyme	Strong	Regionally restricted	6B	Strong expression in the posterior mesenchyme.

Structure	Level	Pattern	Image	Note
TS18: forelimb bud mesenchyme	Present	Regionally restricted	6D	Expression in the most posterior mesenchyme

Structure	Level	Pattern	Image	Note
TS19: forelimb bud mesenchyme	Weak	Regionally restricted	6F	Low levels of expression in a narrow posterior band of cells.