Probe:	Hoxd1 probe4
Probe preparation:	labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS20: vibrissa placode	Strong	Regionally restricted	1B Hoxd1	Strong expression in dermal papillae of vibrissa placodes.

Structure	Level	Pattern	Image	Note
TS15: tail	Present		1F Hoxd1	Expression in embryonic tailbud.
TS15: unsegmented mesenchyme	Weak	Regionally restricted	1F Hoxd1	Expression rapidly disappeared from presomitic mesoderm.
TS15: mesenchyme derived from lateral plate	Absent		1F Hoxd1	Expression undetected in lateral mesoderm progenitors or in neural tube.
TS15: neural tube	Absent		1F Hoxd1	Expression undetected in lateral mesoderm progenitors or in neural tube.

Structure	Level	Pattern	Image	Note
TS20: vibrissa placode	Strong	Regionally restricted	S1C E12.2 Hoxd1	Strong expression in dermal papillae of vibrissa placodes.

Structure	Level	Pattern	Image	Note
TS20: vibrissa placode	Strong	Regionally restricted	S1C E12.5 Hoxd1	Strong expression in dermal papillae of vibrissa placodes.

Structure	Level	Pattern	Image	Note
TS20: vibrissa placode	Strong	Regionally restricted	S1C E12.8 Hoxd1	Strong expression in dermal papillae of vibrissa placodes.

Structure	Level	Pattern	Image	Note
TS21: vibrissa dermal component	Present	Regionally restricted	S1D (right)	Expression in dermal mesenchyme of vibrissa placode. Expression at decreasing intensities
TS21: vibrissa epidermal component	Absent		S1D (right)	No expression in ectoderm-derived region of follicle.

Structure	Level	Pattern	Image	Note
TS20: vibrissa placode	Strong	Regionally restricted	S1E Hoxd1 (left)	Strong expression in dermal papillae of vibrissa placodes.

Structure	Level	Pattern	Image	Note
TS20: vibrissa placode	Strong	Regionally restricted	S1E Hoxd1 (right)	Strong expression in dermal papillae of vibrissa placodes.