Probe:	Mef2c probe2
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography
Assay notes:	Authors state that two probes (MGI:5461731 and MGI:5461732) were used and gave identical in situ hybridization patterns.

Structure	Level	Pattern	Image	Note
TS12: sinus venosus	Present		3A

Structure	Level	Pattern	Image	Note
TS15: heart	Present		3B
TS15: somite	Strong	Regionally restricted	3B	High levels of expression in the rostral somites. Transcripts distributed homogenously throughout the more caudal, less mature somites. No expression in the 11 most caudal somites.
TS15: myotome	Present	Regionally restricted	3B	In older somites, transcripts enriched in regions between or at edges of myotomes.

Structure	Level	Pattern	Image	Note
TS17: heart	Present		6B
TS17: blood vessel	Present	Regionally restricted	6B	Expression cells that appear to represent blood vessels within the midbrain.

Structure	Level	Pattern	Image	Note
TS17: somite	Present	Regionally restricted	6C	In older somites, transcripts enriched in regions between or at edges of myotomes.

Structure	Level	Pattern	Image	Note
TS17: heart	Present		6E
TS17: myotome	Present	Regionally restricted	6E	Expression initially localized to a group of myocytes in the medial region of the myotome. In older somites, transcripts enriched in regions between or at edges of myotomes.
TS17: somite	Present	Uniform	6E	Transcripts distributed homogenously throughout the more caudal, less mature somites.

Structure	Level	Pattern	Image	Note
TS17: myotome	Present

Structure	Level	Pattern	Image	Note
TS19: somite	Present	Regionally restricted	6G	Expression beginning to decline in rostral somites.

Structure	Level	Pattern	Image	Note
TS19: heart	Present

Structure	Level	Pattern	Image	Note
TS19: arterial system	Present	Regionally restricted		Expression in columns of cells that appear to be developing intercostal arteries.