Probe:	Ptpla cDNA
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography
Assay notes:	Authors state that expression was examined on dpc 2.0-8.5 by whole mount in stitu hybridization; not all stages are detailed. These data are described in the text.

Structure	Level	Pattern	Image	Note
TS17: 2nd branchial arch mesenchyme	Present		4A

Structure	Level	Pattern	Image	Note
TS17: somite	Present	Regionally restricted	4B	Expression is in the most recently formed somite.

Structure	Level	Pattern	Image	Note
TS19: trunk myotome	Present		4C
TS19: atrium cardiac muscle	Present		4C
TS19: dorsal root ganglion	Present		4C
TS19: ventricle cardiac muscle	Present		4C
TS19: neural tube	Present	Regionally restricted	4C	Expression is in the ventral part.

Structure	Level	Pattern	Image	Note
TS17: common atrial chamber cardiac muscle	Present	Uniform	4D
TS17: primitive ventricle cardiac muscle	Present	Uniform	4D
TS17: hepatic primordium	Present		4D

Structure	Level	Pattern	Image	Note
TS19: dorsal root ganglion	Present		4E
TS19: liver	Present		4E

Structure	Level	Pattern	Image	Note
TS19: dorsal root ganglion	Present		4F
TS19: liver	Present		4F

Structure	Level	Pattern	Image	Note
TS20: head mesenchyme	Present	Regionally restricted	4G	Expression is in migrating myoblasts ventral to the developing vertebral column of the neck and thorax.
TS20: trunk mesenchyme	Present	Regionally restricted	4G	Expression is in migrating myoblasts ventral to the developing vertebral column of the neck and thorax.

Structure	Level	Pattern	Image	Note
TS20: trunk mesenchyme	Present	Regionally restricted	4H	Expression is in migrating myoblasts ventral to the developing vertebral column of thorax and abdomen.

Structure	Level	Pattern	Image	Note
TS20: tail mesenchyme	Present	Regionally restricted	4I	Expression is in migrating myoblasts ventral to the developing vertebral column of the tail.

Structure	Level	Pattern	Image	Note
TS21: vertebral axis musculature	Present	Regionally restricted	5A	Expression is in intercostal muscles.
TS21: forelimb musculature	Present		5A
TS21: diaphragm	Present		5A	Expression is in the muscle.

Structure	Level	Pattern	Image	Note
TS21: lower jaw mesenchyme	Present	Regionally restricted	5B	Expression is in muscle bundles of the proximal mandible.
TS21: pharynx	Present	Regionally restricted	5B	Expression is in muscle bundles.
TS21: cardiac muscle tissue	Present		5B
TS21: lung epithelium	Present		5B
TS21: ventricle cardiac muscle	Present		5B

Structure	Level	Pattern	Image	Note
TS22: eye skeletal muscle	Present		5C

Structure	Level	Pattern	Image	Note
TS22: anterior abdominal wall muscle	Present		5D
TS22: liver	Present		5D
TS22: smooth muscle tissue	Present	Regionally restricted	5D	Expression is in the smooth muscles of the digestive and urogenital tracts.

Structure	Level	Pattern	Image	Note
TS22: anterior abdominal wall muscle	Present		5E
TS22: liver	Present		5E
TS22: smooth muscle tissue	Present	Regionally restricted	5E	Expression is in the smooth muscles of the digestive and urogenital tracts.

Structure	Level	Pattern	Image	Note
TS22: spinal cord	Absent		5F

Structure	Level	Pattern	Image	Note
TS23: tongue extrinsic muscle	Present		5G
TS23: tongue intrinsic muscle	Present		5G

Structure	Level	Pattern	Image	Note
TS23: tongue extrinsic muscle	Present		5H
TS23: tongue intrinsic muscle	Present		5H
TS23: tooth	Present		5H

Structure	Level	Pattern	Image	Note
TS23: trigeminal ganglion	Present		5I
TS23: vibrissa follicle	Present		5I