Probe:	Fex cDNA2
Probe preparation:	Antisense labelled with S35 RNA

Structure	Level	Pattern	Image	Note
TS28: ovary mature follicle	Present		3A , 3A'
TS28: ovary primary follicle	Absent		3A , 3A'
TS28: ovary secondary follicle	Absent		3A , 3A'

Structure	Level	Pattern	Image	Note
TS28: adrenal medulla	Present		4A , 4A'	Expression is in chromaffin cells.
TS28: adrenal cortex	Absent		4A , 4A'

Structure	Level	Pattern	Image	Note
TS28: adrenal medulla	Present		4B	Expression is in chromaffin cells.
TS28: adrenal cortex	Absent		4B

Structure	Level	Pattern	Image	Note
TS13: ectoplacental cone	Present	Single cells	5A , 5A'

Structure	Level	Pattern	Image	Note
TS28: placenta	Strong		5B , 5B'	Expression is in the labyrinthine region of the forming placenta.
TS15: embryo	Weak		5B , 5B'

Structure	Level	Pattern	Image	Note
TS17: midbrain roof plate	Strong		6A' , 6A , 6B , 6B'
TS17: fronto-nasal process	Present		6A' , 6A
TS17: optic cup	Present		6A' , 6A
TS17: future spinal cord	Present	Regionally restricted	6A' , 6A	Expression is in the ventral and dorsal spinal cord.
TS17: gonad primordium	Absent		6A' , 6A

Structure	Level	Pattern	Image	Note
TS19: hindbrain	Present	Regionally restricted	7C , 7C'	Expression is in the neuroepithelium lining the 4th ventricle.
TS19: midbrain-hindbrain junction	Present	Regionally restricted	7C , 7C'	Expression is in the neuroepithelium lining the 4th ventricle.
TS19: future spinal cord	Present	Regionally restricted	7C' , 7C	Expression is in the dorsal and ventral areas.
TS19: eye	Present	Regionally restricted	7C' , 7C	Expression is in the optic cup.
TS19: mandibular process mesenchyme	Present	Regionally restricted	7C , 7C'	Expression is in the mesenchyme surrounding the mandibular cleft.
TS19: somite	Present	Regionally restricted	7C , 7C'	Expression is in condensing mesenchyme.
TS19: diencephalon	Absent		7C , 7C'
TS19: gonad	Absent		7C , 7C'

Structure	Level	Pattern	Image	Note
TS19: future spinal cord	Present		8A' , 8A	Expression is in the ventral and dorsal area extending laterally from the neuroepithelium lining the neural canal.

Structure	Level	Pattern	Image	Note
TS19: future spinal cord	Present		8B' , 8B
TS19: axial skeleton	Present	Regionally restricted	8B' , 8B	Expression is in the condensing mesenchyme of the intervertebrate disc anlagen.

Structure	Level	Pattern	Image	Note
TS19: neural retinal epithelium	Present		8C , 8C'
TS19: hindbrain	Present	Regionally restricted	8C' , 8C	Expression is in the neuroepithelium lining the 4th ventricle.
TS19: lens vesicle	Absent		8C' , 8C

Structure	Level	Pattern	Image	Note
TS21: diencephalon	Strong	Regionally restricted	9A , 9A'	Expression is at the border between di- and mesencephalon.
TS21: midbrain	Strong	Regionally restricted	9A , 9A'	Expression is at the border between di- and mesencephalon.
TS21: lower jaw epithelium	Present	Regionally restricted	9A' , 9A	Expression is in the mesenchyme and epithelium surrounding the mandibular cleft.
TS21: lower jaw mesenchyme	Present	Regionally restricted	9A' , 9A	Expression is in the mesenchyme and epithelium surrounding the mandibular cleft.
TS21: axial skeleton	Present	Regionally restricted	9A' , 9A	Expression is in the intervertebral discs.
TS21: tooth	Present	Regionally restricted	9B , 9B' , 9A , 9A'	Expression is in the condensed mesenchyme and the ameloblast of the tooth anlage.
TS21: mandible mesenchyme	Present		9B , 9A , 9A' , 9B'
TS21: tongue epithelium	Present		9B , 9A , 9A' , 9B'
TS21: medulla oblongata	Weak	Regionally restricted	9A , 9A'	Expression is at the border.
TS21: metencephalon	Weak	Regionally restricted	9A , 9A'	Expression is at the border.
TS21: gonad	Absent		9A , 9A'

Structure	Level	Pattern	Image	Note
TS21: neural retinal epithelium	Present		9C , 9C'
TS21: pituitary gland	Present		9C , 9C'
TS21: primary palate mesenchyme	Present		9C , 9C'
TS21: nose	Present	Regionally restricted	9C' , 9C	Expression is in the mesenchyme lining the olfactory epithelium.

Structure	Level	Pattern	Image	Note
TS21: viscerocranium	Present	Regionally restricted	9D' , 9D	Expression is in epithelia and mesenchymal tissues under the parachordal plate.
TS21: pulmonary artery	Present		9D' , 9D
TS21: trunk mesenchyme	Weak	Regionally restricted	9D , 9D'	Body wall and mesenchyme surrounding internal organs, e.g., the capsule of the liver.

Structure	Level	Pattern	Image	Note
TS22: nervous system	Trace
TS22: gonad	Absent