Probe:	Fgfr-1 cDNA2
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography
Assay notes:	The authors did not specify which probe was used in this assay. It is possible MGI:2670369 was used instead.

Structure	Level	Pattern	Image	Note
TS9: embryo ectoderm	Present	Uniform	1A/B
TS9: ectoplacental cone	Absent		1A/B
TS9: extraembryonic visceral endoderm	Absent		1A/B
TS28: decidua	Strong		1A/B

Structure	Level	Pattern	Image	Note
TS11: embryo mesoderm	Strong	Regionally restricted	1C/D	Expression was particularly strong in the distal mesoderm lateral to the primitive streak. Transcripts were low to undetectable in the anterior mesoderm.

Structure	Level	Pattern	Image	Note
TS18: brain	Strong		1E/F
TS18: future spinal cord	Strong		1E/F
TS18: trunk somite	Present	Regionally restricted	1E/F	Expression was in the somitic sclerotome. Expression was confined to perichondrium and osteoblasts in the anterior part of the sclerotome-derived vertebral column, while the centers of ossification were negative.
TS18: tail somite	Strong		1E/F	Expression marked the caudal half of forming vertebrae.
TS18: dorsal root ganglion	Absent		1E/F

Structure	Level	Pattern	Image	Note
TS20: vertebral cartilage condensation	Present	Regionally restricted	1G/H	Expression was present throughout the length of the vertebral column and somites, marking the caudal half of the forming vertebrae. Expression is confined to perichondrium and osteoblasts; the centers of ossification are negative.
TS20: tail somite	Present		1G/H	Expression was present throughout the length of the vertebral column and somites. Expression was strong in the less well differentiated sclerotome tissues of tail somites.
TS20: urinary system	Very strong		1G/H	Authors state expression was present in the kidney.
TS20: head mesenchyme	Present		1G/H	Authors state expression was present in the craniofacial mesenchyme.
TS20: lateral ventricle	Present	Regionally restricted	1G/H	Expression was restricted to the proliferative ependymal layer of the lateral and 4th ventricles.
TS20: dorsal root ganglion	Absent		1G/H
TS20: frontal process mesenchyme	Strong		1G/H
TS20: latero-nasal process mesenchyme	Strong		1G/H
TS20: medial-nasal process mesenchyme	Strong		1G/H
TS20: tongue	Strong		1G/H
TS20: mandibular process	Strong		1G/H
TS20: lung	Moderate	Spotted	1G/H	Staining in the lungs was more diffuse than in the kidney.
TS20: gut	Moderate	Spotted	1G/H	Staining in the intestine was more diffuse than in the kidney.
TS20: heart	Absent		1G/H
TS20: liver	Absent		1G/H
TS20: maxillary process mesenchyme	Strong		1G/H
TS20: 4th ventricle	Present	Regionally restricted	1G/H	Expression was restricted to the proliferative ependymal layer of the lateral and 4th ventricles.

Structure	Level	Pattern	Image	Note
TS13: trunk unsegmented mesenchyme	Strong	Regionally restricted	4A/B	Transcripts were abundant in the most rostral part of the presomitic mesoderm immediately caudal to the last-formed somite. Transcripts were confined to a block of cells approximately the size of one somite.
TS13: head somite	Strong	Regionally restricted	4A/B	Expression was strong within newly forming epithelial somites, but only in the rostral half. Restriction of expression to the rostral half somites was clearest in the two most recently formed somites and was less detectable in more rostral somites.
TS13: trunk somite	Strong	Regionally restricted	4A/B	Expression was strong within newly forming epithelial somites, but only in the rostral half. Restriction of expression to the rostral half somites was clearest in the two most recently formed somites and was less detectable in more rostral somites.

Structure	Level	Pattern	Image	Note
TS18: tail dermomyotome	Present	Regionally restricted	4C/D	Expression is in the dermatome.
TS18: tail sclerotome	Present		4C/D