Probe:	Crabp-1 cDNA1
Probe preparation:	Antisense RNA

Structure	Level	Pattern	Image	Note
TS15: 2nd branchial arch	Present	Regionally restricted	4a left	Expression is present in two broad subectodermal sheets of neural crest cells arising from rhombomeres 4, 6 & 7; they colonize the periphery of the 2nd, 3rd & 4th arches, respectively, enveloping negative mesenchymal cells derived from paraxial mesoderm.
TS15: 3rd branchial arch	Present	Regionally restricted	4a left	Expression is present in two broad subectodermal sheets of neural crest cells arising from rhombomeres 4, 6 & 7; they colonize the periphery of the 2nd, 3rd & 4th arches, respectively, enveloping negative mesenchymal cells derived from paraxial mesoderm.
TS15: branchial arch	Present	Regionally restricted	4a left	Expression is present in two broad subectodermal sheets of neural crest cells arising from rhombomeres 4, 6 & 7; they colonize the periphery of the 2nd, 3rd & 4th arches, respectively, enveloping negative mesenchymal cells derived from paraxial mesoderm.
TS15: migrating neural crest	Present	Regionally restricted	4a left	Expression is present in two broad subectodermal sheets of neural crest cells arising from rhombomeres 4, 6 & 7; they colonize the periphery of the 2nd, 3rd & 4th arches, respectively, enveloping negative mesenchymal cells derived from paraxial mesoderm.
TS15: rhombomere 4	Strong		4a left
TS15: rhombomere 6	Strong		4a left
TS15: neural tube	Present	Graded	4a left	Expression gradually decreases in r7 and more posterior regions of the neural tube.
TS15: rhombomere 7	Present	Graded	4a left	Expression gradually decreases in r7 and more posterior regions of the neural tube.

Structure	Level	Pattern	Image	Note
TS15: 2nd branchial arch	Present	Single cells	4a right	Expression in this mutant is the same as in wild-type embryos. No significant alterations in the number and migratory paths of neural crest cells in the pharyngeal arches were detected.
TS15: 3rd branchial arch	Present	Single cells	4a right	Expression in this mutant is the same as in wild-type embryos. No significant alterations in the number and migratory paths of neural crest cells in the pharyngeal arches were detected.
TS15: branchial arch	Present	Single cells	4a right	Expression in this mutant is the same as in wild-type embryos. No significant alterations in the number and migratory paths of neural crest cells in the pharyngeal arches were detected.
TS15: migrating neural crest	Present	Single cells	4a right	Expression in this mutant is the same as in wild-type embryos. No significant alterations in the number and migratory paths of neural crest cells in the pharyngeal arches were detected.
TS15: neural tube	Strong		4a right	In mutants, the domain of stronger expression had expanded caudally, reaching the level of the first spinal ganglion.
TS15: rhombomere 4	Strong		4a right	In mutants, the domain of stronger expression had expanded caudally, reaching the level of the first spinal ganglion.
TS15: rhombomere 6	Strong		4a right	In mutants, the domain of stronger expression had expanded caudally, reaching the level of the first spinal ganglion.
TS15: rhombomere 7	Strong		4a right	In mutants, the domain of stronger expression had expanded caudally, reaching the level of the first spinal ganglion.
TS15: spinal ganglion	Strong		4a right	In mutants, the domain of stronger expression had expanded caudally, reaching the level of the first spinal ganglion.

Structure	Level	Pattern	Image	Note
TS15: 2nd branchial arch	Present	Single cells	4b left	Expression is present in two broad subectodermal sheets of neural crest cells arising from rhombomeres 4, 6 & 7; they colonize the periphery of the 2nd, 3rd & 4th arches, respectively, enveloping negative mesenchymal cells derived from paraxial mesoderm.
TS15: 3rd branchial arch	Present	Single cells	4b left	Expression is present in two broad subectodermal sheets of neural crest cells arising from rhombomeres 4, 6 & 7; they colonize the periphery of the 2nd, 3rd & 4th arches, respectively, enveloping negative mesenchymal cells derived from paraxial mesoderm.
TS15: branchial arch	Present	Single cells	4b left	Expression is present in two broad subectodermal sheets of neural crest cells arising from rhombomeres 4, 6 & 7; they colonize the periphery of the 2nd, 3rd & 4th arches, respectively, enveloping negative mesenchymal cells derived from paraxial mesoderm.

Structure	Level	Pattern	Image	Note
TS15: 2nd branchial arch	Present	Single cells	4b right	Expression in this mutant is the same as in wild-type embryos. No significant alterations in the number and migratory paths of neural crest cells in the pharyngeal arches were detected.
TS15: 3rd branchial arch	Present	Single cells	4b right	Expression in this mutant is the same as in wild-type embryos. No significant alterations in the number and migratory paths of neural crest cells in the pharyngeal arches were detected.
TS15: branchial arch	Present	Single cells	4b right	Expression in this mutant is the same as in wild-type embryos. No significant alterations in the number and migratory paths of neural crest cells in the pharyngeal arches were detected.

Structure	Level	Pattern	Image	Note
TS15: 2nd branchial arch	Present	Single cells		Expression in this mutant is the same as in wild-type embryos.
TS15: 3rd branchial arch	Present	Single cells		Expression in this mutant is the same as in wild-type embryos.
TS15: branchial arch	Present	Single cells		Expression in this mutant is the same as in wild-type embryos.
TS15: neural tube	Present			Expression in this mutant is the same as in wild-type embryos.
TS15: rhombomere 4	Present			Expression in this mutant is the same as in wild-type embryos.
TS15: rhombomere 6	Present			Expression in this mutant is the same as in wild-type embryos.
TS15: rhombomere 7	Present			Expression in this mutant is the same as in wild-type embryos.

Structure	Level	Pattern	Image	Note
TS15: 2nd branchial arch	Present	Single cells		Expression in this mutant is the same as in wild-type embryos.
TS15: 3rd branchial arch	Present	Single cells		Expression in this mutant is the same as in wild-type embryos.
TS15: branchial arch	Present	Single cells		Expression in this mutant is the same as in wild-type embryos.
TS15: neural tube	Present			Expression in this mutant is the same as in wild-type embryos.
TS15: rhombomere 4	Present			Expression in this mutant is the same as in wild-type embryos.
TS15: rhombomere 6	Present			Expression in this mutant is the same as in wild-type embryos.
TS15: rhombomere 7	Present			Expression in this mutant is the same as in wild-type embryos.