Probe:	Fgf8 probe43
Probe preparation:	RNA

Structure	Level	Pattern	Image	Note
TS15: 1st branchial arch mandibular component	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: 1st branchial arch maxillary component	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: blood vessel	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: heart	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: hindgut epithelium	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: midbrain-hindbrain junction	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: otocyst	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: tail mesenchyme	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: tail nervous system	Present		5A	Normal expression in the midbrain-hindbrain junction, maxillary and mandibular components of the first branchial arch, otic vesicle, heart and associated vasculature, hindgut endoderm, and tail bud nascent mesoderm and neuroepithelium.
TS15: future brain	Present	Regionally restricted	5A	Authors report expression in the commissural plate.

Structure	Level	Pattern	Image	Note
TS15: hindgut	Present	Regionally restricted	5B	Expression in hindgut stops at the level of the posterior neuropore.
TS15: tail	Trace		5B	Expression virtually absent in the tailbud.

Structure	Level	Pattern	Image	Note
TS15: tail mesenchyme	Weak		5B inset	Expression is down-regulated in the nascent mesoderm of tail bud tissues.

Structure	Level	Pattern	Image	Note
TS15: tail	Trace			Expression virtually absent in the tailbud.

Structure	Level	Pattern	Image	Note
TS15: embryo	Present	Regionally restricted	5C	Authors report patterns of expression comparable with that of wild-type embryos.
TS15: 1st branchial arch mandibular component	Present		5C
TS15: 1st branchial arch maxillary component	Present		5C
TS15: otocyst	Present		5C