Probe:	Tmem16a cDNA2
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS20: trachea epithelium	Present		2A
TS20: lung epithelium	Present	Regionally restricted	2A	Expression is absent in the distal tip.

Structure	Level	Pattern	Image	Note
TS22: lung epithelium	Present	Regionally restricted	2B	Expression is absent in the distal epithelium.
TS22: lung mesenchyme	Present	Regionally restricted	2B	Expression is in the mesenchyme surrounding the bronchiolar epithelium.

Structure	Level	Pattern	Image	Note
TS24: lung epithelium	Present		2C
TS24: rib	Present	Regionally restricted	2C	Expression is in the perichondrium.
TS24: lung mesenchyme	Absent		2C

Structure	Level	Pattern	Image	Note
TS26: lung epithelium	Present	Regionally restricted	2D	Expression is in the epithelium of the terminal saccules.

Structure	Level	Pattern	Image	Note
TS24: esophagus mesenchyme	Present	Regionally restricted	3A	Expression is in the submucosa.
TS24: aorta	Present		3A
TS24: thymus	Present		3A
TS24: trachea epithelium	Present		3A
TS24: trachea mesenchyme	Present	Regionally restricted	3A	Expression is in the mesenchyme immediately dorsal to the trachea.
TS24: esophagus epithelium	Absent		3A

Structure	Level	Pattern	Image	Note
TS22: metanephros	Present		3B
TS22: pancreas	Present		3B
TS22: stomach mesenchyme	Present		3B
TS22: ureter	Present		3B
TS22: stomach epithelium	Present	Regionally restricted	3B	Expression is in the posterior stomach.
TS22: intestine mesenchyme	Present	Regionally restricted	3B , 3C	Small intestine.
TS22: intestine epithelium	Weak	Regionally restricted	3B , 3C	Small intestine.

Structure	Level	Pattern	Image	Note
TS22: spinal cord	Weak	Regionally restricted	4A	Expression is in the dorsal neural tube.
TS22: vertebral cartilage condensation	Weak	Regionally restricted	4A	Expression is in the perichondrium of the neural arch of a vertebra.

Structure	Level	Pattern	Image	Note
TS22: dorsal aorta	Present		4B
TS22: thymus primordium	Present		4B
TS22: trachea mesenchyme	Present	Regionally restricted	4B	Expression is in the mesenchyme dorsal to the trachea.

Structure	Level	Pattern	Image	Note
TS24: esophagus	Present		4C
TS24: thymus	Present		4C
TS24: trachea epithelium	Present		4C
TS24: rib	Present	Regionally restricted	4C	Expression is in the perichondria.
TS24: vertebra	Present	Regionally restricted	4C	Expression is in the perichondria.
TS24: trachea mesenchyme	Present	Regionally restricted	4C	Expression is in the mesenchyme dorsal to the trachea.

Structure	Level	Pattern	Image	Note
TS24: epidermis	Present	Regionally restricted	5A	Expression is in the basal layers.