Probe:	Dll1 probe3
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS19: tail somite	Present		4d
TS19: tail unsegmented mesenchyme	Present		4d
TS19: nervous system	Present	Regionally restricted	4d	Expression was detected in subsets of cells in the nervous system.

Structure	Level	Pattern	Image	Note
TS20: nervous system	Present		4e , 4f
TS20: tail somite	Present		4e , 4f
TS20: tail unsegmented mesenchyme	Present		4e , 4f
TS20: vibrissa	Present		4e , 4f

Structure	Level	Pattern	Image	Note
TS19: neural tube	Present	Non-Uniform	4j	Expression was detected throughout the entire neural tube and was stronger in the dorsal part of the neural tube including the mantle layer.
TS19: neural tube mantle layer	Strong	Regionally restricted	4j	Expression was detected throughout the entire neural tube and was stronger in the dorsal part of the neural tube including the mantle layer.

Structure	Level	Pattern	Image	Note
TS20: spinal cord	Strong	Regionally restricted	4k	Expression was strong in the dorsal-most part of the neural tube.

Structure	Level	Pattern	Image	Note
TS20: vibrissa	Strong	Regionally restricted	4l	Expression was strong in the dermal condensations of the vibrissae buds.