Probe:	B61 cDNA
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS12: lateral plate mesoderm	Present		3E
TS12: primitive streak	Present		3E
TS12: neural ectoderm	Absent		3E

Structure	Level	Pattern	Image	Note
TS12: lateral plate mesoderm	Present		3F
TS12: primitive streak	Present		3F
TS12: neural ectoderm	Absent		3F

Structure	Level	Pattern	Image	Note
TS15: tail	Strong		3H , 3G
TS15: blood vessel	Present		3G , 3H

Structure	Level	Pattern	Image	Note
TS16: forelimb bud	Absent
TS16: hindlimb bud	Absent

Structure	Level	Pattern	Image	Note
TS18: forelimb bud	Strong	Regionally restricted	8A	Expression is in a circular domain in the posterior-distal part of the developing handplate and a lower level in a complex network prominent along the midline of the proximal-distal axis.

Structure	Level	Pattern	Image	Note
TS18: hindlimb bud	Weak

Structure	Level	Pattern	Image	Note
TS20: hindlimb	Strong	Regionally restricted	8B	Expression is a curved rod extending from the distal posterior edge towards the center.

Structure	Level	Pattern	Image	Note
TS19: handplate	Present	Regionally restricted	8C	Expression is the mesoderm in a circular domain in the middle of the dorsal/ventral plane.

Structure	Level	Pattern	Image	Note
TS21: foot	Present	Regionally restricted	8D	Expression is on the ventral side of hand/footplate in a pattern that correlates with blood sinuses and sites of future blood vessels. (Authors did not specify if hand/or foot plate is shown).
TS21: hand	Present	Regionally restricted	8D	Expression is on the ventral side of hand/footplate in a pattern that correlates with blood sinuses and sites of future blood vessels. (Authors did not specify if hand/or foot plate is shown).