Probe:	alpha-1(II) collagen probe1
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS17: trunk mesenchyme	Present	Regionally restricted	1B	Expression was detected in a large patch of chondrogenic mesenchyme corresponding to the early scapulo-humeral blastema.

Structure	Level	Pattern	Image	Note
TS20: shoulder mesenchyme	Present	Regionally restricted	2B/B'	Expression was detected in the scapulo-humeral blastema.

Structure	Level	Pattern	Image	Note
TS20: shoulder mesenchyme	Weak	Regionally restricted		Expression was weak in the condensing mesenchyme of the developing acromion of the spina scapula.

Structure	Level	Pattern	Image	Note
TS20: shoulder mesenchyme	Present	Regionally restricted	2C	Expression was strong in the blastemal scapula blade and spina. Expression was weak in the condensing mesenchyme of the developing acromion.

Structure	Level	Pattern	Image	Note
TS20: shoulder mesenchyme	Present	Regionally restricted	2E/E'	Expression was strong in the blastemal scapula blade and spina. Expression was weak in the condensing mesenchyme of the developing acromion.

Structure	Level	Pattern	Image	Note
TS20: shoulder mesenchyme	Strong	Regionally restricted	2G	Expression was strong in the precartilaginous proximal end of the acromion.

Structure	Level	Pattern	Image	Note
TS20: shoulder mesenchyme	Weak	Regionally restricted	2J	Expression was weak in the distal (ventral) extremity of the acromion, where the cells were still undergoing condensation.

Structure	Level	Pattern	Image	Note
TS20: hip mesenchyme	Weak	Regionally restricted	3B	Expression could just be visualized in the early blastemas of the ischium, ileum and pubis in the pelvic region.