Probe:	Brachyury probe6
Probe preparation:	RNA

Structure	Level	Pattern	Image	Note
TS15: tail	Present	Regionally restricted	4A
TS15: notochord	Strong		4A	Strong expression in tail bud nascent mesoderm and neuroepithelium, as well as notochord.
TS15: tail mesenchyme	Strong		4A	Strong expression in tail bud nascent mesoderm and neuroepithelium, as well as notochord.
TS15: tail nervous system	Strong		4A	Strong expression in tail bud nascent mesoderm and neuroepithelium, as well as notochord.

Structure	Level	Pattern	Image	Note
TS15: tail	Present	Regionally restricted	4B	Authors report expression patterns comparable to that of wild type.

Structure	Level	Pattern	Image	Note
TS15: tail	Present	Regionally restricted	4C	Authors report expression patterns comparable to that of wild type.

Structure	Level	Pattern	Image	Note
TS15: tail	Present	Regionally restricted	4C inset

Structure	Level	Pattern	Image	Note
TS15: tail mesenchyme	Weak	Regionally restricted	4D	Expression severely downregulated in tail bud mesoderm and neuroepithelium.
TS15: tail nervous system	Weak	Regionally restricted	4D	Expression severely downregulated in tail bud mesoderm and neuroepithelium.
TS15: notochord	Present	Regionally restricted	4D	Expression in notochord stops abruptly at the level of the posterior neuropore.