Probe:	Perlecan probe3
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Cell Type	Level	Pattern	Image	Note
TS26: mandible	osteocyte	Present		2b	Expression in many osteocytes.

Structure	Level	Pattern	Image	Note
TS22: mandible condylar condensation	Absent		3b	Expression not detected in condylar anlage.

Structure	Cell Type	Level	Pattern	Image	Note
TS23: mandible condylar process	chondrocyte	Present		3f	Expression in newly formed chondrocytes.

Structure	Cell Type	Level	Pattern	Image	Note
TS24: mandible condylar process	chondrocyte	Present	Regionally restricted	3j	Expression in chondrocytes from flattened cell zone to upper hypertrophic cell zone, reduced expression in lower hypertrophic cell zone.

Structure	Level	Pattern	Image	Note
TS20: lower leg mesenchyme	Absent		4b	No expression in mesenchymal cell condensation of anlage of future tibia.

Structure	Level	Pattern	Image	Note
TS21: tibia-fibula pre-cartilage condensation	Present	Regionally restricted	4f	Expression thoughout cartilage of anlage of future tibia.

Structure	Cell Type	Level	Pattern	Image	Note
TS22: tibia cartilage condensation	chondrocyte	Present	Regionally restricted	4j	Expression in chondrocytes throughout entire proliferative and maturation cells zones; weaker expression in hypertrophic cell zone.