Probe:	Mid2 oligo1
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS17: embryo	Present	Ubiquitous	3A
TS17: branchial arch	Strong		3A
TS17: branchial arch ectoderm	Strong		3A
TS17: forebrain	Strong		3A
TS17: frontal process ectoderm	Strong		3A
TS17: head surface ectoderm	Strong		3A
TS17: heart	Strong		3A
TS17: somite	Strong		3A
TS17: vitelline duct	Strong		3A
TS17: head	Strong	Regionally restricted	3A	Expression is in the epithelium of the craniofacial prominences.
TS17: hindbrain	Strong	Regionally restricted	3A	Expression is high in the anterior portion.

Structure	Level	Pattern	Image	Note
TS17: 1st branchial arch mandibular component ectoderm	Strong		4C
TS17: 1st branchial arch maxillary component ectoderm	Strong		4C
TS17: 1st branchial arch mandibular component mesenchyme	Strong	Regionally restricted	4C	Expression is in the mesenchyme adjacent to the epithelium.
TS17: 1st branchial arch maxillary component mesenchyme	Strong	Regionally restricted	4C	Expression is in the mesenchyme adjacent to the epithelium.
TS17: nasal pit epithelium	Strong	Regionally restricted	4C	Expression is in the dorsal-most border of nasal pit.

Structure	Level	Pattern	Image	Note
TS17: latero-nasal process ectoderm	Strong		4D	Expression is stronger in the distal ends.
TS17: medial-nasal process ectoderm	Strong		4D	Expression is stronger in the distal ends.
TS17: latero-nasal process mesenchyme	Strong	Regionally restricted	4D	Expression is in the mesenchyme adjacent to the epithelium and is stronger at the distal ends.
TS17: medial-nasal process mesenchyme	Strong	Regionally restricted	4D	Expression is in the mesenchyme adjacent to the epithelium and is stronger at the distal ends.

Structure	Level	Pattern	Image	Note
TS17: latero-nasal process ectoderm	Strong		5E	Expression is stronger in the distal ends.
TS17: medial-nasal process ectoderm	Strong		5E	Expression is stronger in the distal ends.
TS17: latero-nasal process mesenchyme	Strong	Regionally restricted	5E	Expression is in the mesenchyme adjacent to the epithelium. Expression is stronger in the distal ends.
TS17: medial-nasal process mesenchyme	Strong	Regionally restricted	5E	Expression is in the mesenchyme adjacent to the epithelium. Expression is stronger in the distal ends.
TS17: forebrain	Strong		5E
TS17: hindbrain	Strong		5E

Structure	Level	Pattern	Image	Note
TS17: latero-nasal process ectoderm	Strong	Regionally restricted	5F	Expression is stronger in the distal ends at the putative site of fusion.
TS17: latero-nasal process mesenchyme	Strong	Regionally restricted	5F	Expression is stronger in the distal ends at the putative site of fusion.
TS17: medial-nasal process ectoderm	Strong	Regionally restricted	5F	Expression is stronger in the distal ends at the putative site of fusion.
TS17: medial-nasal process mesenchyme	Strong	Regionally restricted	5F	Expression is stronger in the distal ends at the putative site of fusion.

Structure	Level	Pattern	Image	Note
TS17: latero-nasal process ectoderm	Weak	Regionally restricted	5G	After fusion expression at the distal ends is downregulated.
TS17: latero-nasal process mesenchyme	Weak	Regionally restricted	5G	After fusion expression at the distal ends is downregulated.
TS17: medial-nasal process ectoderm	Weak	Regionally restricted	5G	After fusion expression at the distal ends is downregulated.
TS17: medial-nasal process mesenchyme	Weak	Regionally restricted	5G	After fusion expression at the distal ends is downregulated.