Probe:	Cpa1 probe
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Cell Type	Level	Pattern	Image	Note
TS22: pancreas branching epithelium tip	pancreas exocrine glandular cell	Present		2A	Exocrine cell marker. Expression overlaps completely with Myc staining.

Structure	Cell Type	Level	Pattern	Image	Note
TS22: pancreas branching epithelium tip	pancreas exocrine glandular cell	Present		2D	Exocrine cell marker.
TS22: pancreas branching epithelium trunk		Absent		2D	Expression did not overlap with Neurog3 staining in the trunk.

Structure	Level	Pattern	Image	Note
TS20: pancreas branching epithelium tip	Strong	Regionally restricted	2G	Expression was detected in the newly formed branches of the dorsal pancreas at E12.5. Expression was downregulated in the 'cleft' region between future branches.

Structure	Level	Pattern	Image	Note
TS21: pancreas branching epithelium tip	Present	Regionally restricted	2H	Expression was detected in the newly formed branches of the dorsal pancreas at E12.5. Expression was downregulated in the 'cleft' region between future branches. Expression did not overlap with Neurog3 staining in the trunk.

Structure	Level	Pattern	Image	Note
TS20: pancreas branching epithelium tip	Present	Regionally restricted	S5A	Expression was detected in the newly formed branches of the dorsal pancreas at E12.5, where it co-expressed Myc. Expression was downregulated in the 'cleft' region between future branches.

Structure	Level	Pattern	Image	Note
TS20: pancreas branching epithelium tip	Present	Regionally restricted	S5B	Expression was detected in the newly formed branches of the dorsal pancreas at E12.5, where it co-expressed Ptf1a. Expression was downregulated in the 'cleft' region between future branches.