Probe:	probe 18.1
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS19: tongue mesenchyme	Present	Regionally restricted	2U	Expression is in both the lingual margin and posterior part of the tongue.

Structure	Level	Pattern	Image	Note
TS19: tongue mesenchyme	Present	Regionally restricted	2U'	Expression is in the lateral sub-epithelial and inferior mesenchyme.

Structure	Level	Pattern	Image	Note
TS20: tongue mesenchyme	Present	Regionally restricted	2V	Expression is in the anterior part except for the median sulcus.

Structure	Level	Pattern	Image	Note
TS20: tongue mesenchyme	Present	Regionally restricted	2V'	Expression is in the deep mesenchyme in the body of the tongue.

Structure	Level	Pattern	Image	Note
TS21: tongue mesenchyme	Present	Regionally restricted	2W	Expression is in the anterior part.

Structure	Level	Pattern	Image	Note
TS21: tongue muscle	Strong	Regionally restricted	2W'	Expression is in the longitudinal muscles and the peripheral regions of the transverse and vertical muscles of the tongue.
TS21: tongue mesenchyme	Present		2W'

Structure	Level	Pattern	Image	Note
TS22: tongue mesenchyme	Present	Regionally restricted	2X	Expression is in the anterior lateral part of the tongue near the median sulcus.

Structure	Level	Pattern	Image	Note
TS22: tongue muscle	Present	Regionally restricted	2X'	Bilateral expression in the transverse and vertical muscle region.
TS22: tongue mesenchyme	Present		2X'