Probe:	Hox-1.6 cDNA 3
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS13: embryo mesenchyme	Present	Regionally restricted	5B	Expression in the embryonic mesoderm, anterior to the first somite, up to the cephalic region, at the level of the foregut and developing heart. Anterior boundary in cephalic mesoderm is roughly at the level of the distal part of the foregut pocket.

Structure	Level	Pattern	Image	Note
TS13: embryo	Present		5C

Structure	Level	Pattern	Image	Note
TS13: neural ectoderm	Present	Regionally restricted	5D	Expression in the neurectoderm, with an anterior limit corresponding to a neuromeric constriction within the future myelencephalon.

Structure	Level	Pattern	Image	Note
TS13: embryo	Weak	Regionally restricted	5E	Weak expression in the most posterior part of the embryo.

Structure	Level	Pattern	Image	Note
TS14: foregut	Strong	Regionally restricted	5G	Strong expression in foregut epithelium as well as in surrounding mesoderm.

Structure	Level	Pattern	Image	Note
TS15: embryo	Weak	Regionally restricted	5J	Weak expression in the most posterior part of the embryo.

Structure	Level	Pattern	Image	Note
TS15: 3rd branchial arch	Present		5L	Authors report expression in the foregut immediately posterior to the second branchial pouch, therefore likely at the level of the third branchial arch or pouch.