Probe:	pRcol2 cDNA
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS22: mandible	Absent

Structure	Level	Pattern	Image	Note
TS23: mandible	Present	Regionally restricted	2c	Slight expression was noted in periosteal osteogenic cells. Expression was detected in hypertrophic chondrocytes of the cartilage matrix.

Structure	Level	Pattern	Image	Note
TS24: mandible	Present	Regionally restricted	4a , 3c	Expression was detected in the chondrocytes from the lower polymorphic cell layer to the bottom of the hypertrophic cell layer of the condylar cartilage, but not in the fibrous cell layer. Slight expression was noted in the periosteal osteogenic cells.

Structure	Level	Pattern	Image	Note
TS26: mandible	Ambiguous		5c	Expression disappeared in the chondrocytes of the lower half of the hypertrophic cell layer of the condylar cartilage of the mandible.

Structure	Level	Pattern	Image	Note
TS21: tibia-fibula pre-cartilage condensation	Present	Regionally restricted	6c	Expression was restricted to the chondrocytes and was not detected in the osteogenic cells.

Structure	Level	Pattern	Image	Note
TS22: tibia cartilage condensation	Present	Regionally restricted	6h	Expression was detected in the chondrocytes of the cartilage.