Probe:	Hoxb2 cDNA3
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS15: foregut	Present	Regionally restricted	1A b2	Most abundant in the rostral part extending proximally from the second branchial arch to the top of the esophageal portion of the foregut just distal to the fourth arch, weak expression elsewhere.
TS15: midgut	Weak	Regionally restricted	1A b2	Proximal midgut.

Structure	Level	Pattern	Image	Note
TS17: lung mesenchyme	Present	Regionally restricted	2_E10.5 b2	Expression is in the distal mesenchyme.
TS17: lung epithelium	Absent		2_E10.5 b2
TS17: main bronchus epithelium	Absent		2_E10.5 b2
TS17: main bronchus mesenchyme	Absent		2_E10.5 b2
TS17: trachea epithelium	Absent		2_E10.5 b2
TS17: trachea mesenchyme	Absent		2_E10.5 b2

Structure	Level	Pattern	Image	Note
TS19: lung mesenchyme	Present	Regionally restricted	2_E11.5 b2	Expression is in the distal mesenchyme.
TS19: lung epithelium	Absent		2_E11.5 b2
TS19: main bronchus epithelium	Absent		2_E11.5 b2
TS19: main bronchus mesenchyme	Absent		2_E11.5 b2
TS19: trachea epithelium	Absent		2_E11.5 b2
TS19: trachea mesenchyme	Absent		2_E11.5 b2

Structure	Level	Pattern	Image	Note
TS20: lung mesenchyme	Present	Regionally restricted	2_E12.5 b2	Expression is in the distal mesenchyme.
TS20: lung epithelium	Absent		2_E12.5 b2
TS20: main bronchus epithelium	Absent		2_E12.5 b2
TS20: main bronchus mesenchyme	Absent		2_E12.5 b2
TS20: trachea epithelium	Absent		2_E12.5 b2
TS20: trachea mesenchyme	Absent		2_E12.5 b2