Probe:	Pax1 probe3
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS13: head somite	Present	Regionally restricted		Expression is in the ventromedial part of the newly formed somites.

Structure	Level	Pattern	Image	Note
TS17: tail somite	Present	Regionally restricted	1A	The caudal part of the sclerotome has higher expression and the expression extends more dorsally than expression in the cranial part of the sclerotome.
TS17: trunk somite	Present	Regionally restricted	1A	The caudal part of the sclerotome has higher expression and the expression extends more dorsally than expression in the cranial part of the sclerotome.

Structure	Level	Pattern	Image	Note
TS20: axial skeleton	Present	Regionally restricted		Expression is in the anlagen of the intervertebral disc, weaker expression is in the perichondial lining of the vertebral bodies, the pedicles and the proximal ribs.