Probe:	CRABP-I cDNA5
Probe preparation:	Antisense RNA

Structure	Level	Pattern	Image	Note
TS12: rhombomere	Strong	Regionally restricted	1H	Expressed strongly in the neuroepithelium of the caudal three-quarters of rhombomere B and the rostral third of rhombomere C.
TS12: head mesenchyme	Present		1H	Lower expression.
TS12: lateral plate mesoderm	Present		1H	Lower expression.

Structure	Level	Pattern	Image	Note
TS12: rhombomere	Strong	Regionally restricted	1I	Expressed strongly in the neuroepithelium of the caudal three-quarters of rhombomere B and the rostral third of rhombomere C.
TS12: head mesenchyme	Present		1I	Lower expression.
TS12: lateral plate mesoderm	Present		1I	Lower expression.

Structure	Level	Pattern	Image	Note
TS12: neural crest	Strong	Regionally restricted	2A	Expressed in presumptive neural crest cells at the dorsal edge of the neural folds extending caudally from rhombomere 6 over the anterior presomitic region.
TS12: future hindbrain	Weak	Regionally restricted	2A	A gradient expression at a low level in the neuroepithelium of rhombomere 2 and decreasing through the rostral hindbrain.

Structure	Level	Pattern	Image	Note
TS12: neural crest	Strong	Regionally restricted	2B	Expressed in presumptive neural crest cells at the dorsal edge of the neural folds extending caudally from rhombomere 6 over the anterior presomitic region.
TS12: future hindbrain	Weak	Regionally restricted	2B	A gradient expression at a low level in the neuroepithelium of rhombomere 2 and decreasing through the rostral hindbrain.

Structure	Level	Pattern	Image	Note
TS13: rhombomere 4	Strong		2C
TS13: rhombomere 5	Strong		2C
TS13: posterior pro-rhombomere	Strong		2C	Expressed in rhombomere 6.
TS13: 1st branchial arch	Weak		2C	Low expression in a band extending from rhombomere 2 to the first branchial arch.
TS13: 2nd branchial arch	Present		2C	Expressed in a band of higher expression extended from rhombomere 4 to the second arch.
TS13: branchial arch	Present	Regionally restricted	2C	Expressed in a band of higher expression extended from rhombomere 6 to the third arch.
TS13: head mesenchyme	Weak		2C
TS13: lateral plate mesoderm	Weak		2C

Structure	Level	Pattern	Image	Note
TS13: rhombomere 4	Strong		2D
TS13: rhombomere 5	Strong		2D
TS13: future hindbrain	Weak	Regionally restricted	2D	A gradient expression at a low level in the neuroepithelium of rhombomere 2 and decreasing through the rostral hindbrain.
TS13: posterior pro-rhombomere	Strong		2D	Expressed in rhombomere 6.
TS13: 1st branchial arch	Weak		2D	Low expression in a band extending from rhombomere 2 to the first branchial arch.
TS13: 2nd branchial arch	Present		2D	Expressed in a band of higher expression extended from rhombomere 4 to the second arch.
TS13: branchial arch	Present	Regionally restricted	2D	Expressed in a band of higher expression extended from rhombomere 6 to the third arch.
TS13: head mesenchyme	Weak		2D
TS13: lateral plate mesoderm	Weak		2D

Structure	Level	Pattern	Image	Note
TS14: rhombomere 4	Strong		2F
TS14: rhombomere 5	Strong		2F
TS14: rhombomere 6	Strong		2F
TS14: 1st branchial arch	Weak		2F	Low expression in a band extending from rhombomere 2 to the first branchial arch.
TS14: 2nd branchial arch	Present		2F	Expressed in a band of higher expression extended from rhombomere 4 to the second arch.
TS14: 3rd branchial arch	Present		2F	Expressed in a band of higher expression extended from rhombomere 6 to the third arch.

Structure	Level	Pattern	Image	Note
TS15: 2nd branchial arch	Present		2G
TS15: 3rd branchial arch	Present		2G
TS15: diencephalon	Strong	Regionally restricted	2G	Expressed in the caudal half.
TS15: future midbrain	Strong	Regionally restricted	2G	Expressed in the dorsal mesencephalon.
TS15: fronto-nasal process mesenchyme	Strong		2G
TS15: rhombomere 1	Strong		2G
TS15: rhombomere 2	Strong		2G
TS15: 1st branchial arch mandibular component	Trace		2G	Barely detectable.

Structure	Level	Pattern	Image	Note
TS15: diencephalon	Strong	Regionally restricted	2H	Expressed in the caudal half.
TS15: future midbrain	Strong	Regionally restricted	2H	Expressed in the dorsal mesencephalon.
TS15: fronto-nasal process mesenchyme	Strong		2H
TS15: rhombomere 1	Strong		2H
TS15: rhombomere 2	Strong		2H
TS15: forelimb bud	Weak	Uniform	2H
TS15: 1st branchial arch mandibular component	Trace		2H	Barely detectable.