Probe:	BMP2 cDNA
Probe preparation:	RNA

Structure	Level	Pattern	Image	Note
TS18: 1st branchial arch mandibular component	Weak	Regionally restricted	1C	Bmp2 is expressed at the mesial tip of the jaw in a short, thin strip of epithelial cells that extends distally. In all cases, expression was symmetrical on either side of the median sulcus.
TS18: tongue	Absent		1C

Structure	Level	Pattern	Image	Note
TS19: mandible primordium	Strong	Regionally restricted	1I	The midline expression extends further distally. Expression is upregulated relative to E11.0. Highest levels of expression are mesially and distally with an apparent downregulation in between.
TS19: tongue	Absent		1I

Structure	Level	Pattern	Image	Note
TS20: mandible primordium	Present	Regionally restricted	1O	Expression is completely downregulated in the diastema. Expression occurs at the midline in the incisor domains and further distally in the molar primordia. Bmp2 is also expressed in the most distal mesenchyme of the outgrowing jaw.
TS20: tongue	Absent		1O

Structure	Level	Pattern	Image	Note
TS20: mandible primordium	Strong	Regionally restricted	1U	Bmp2 is expressed at the tip of the tooth epithelium.