Antibody:	Anti-Fyn
Detection system:	Biotinylated secondary antibody/[Strept]avidin coupled to horseradish peroxidase

Structure	Level	Pattern	Image	Note
TS2: 2-cell stage embryo	Present

Structure	Level	Pattern	Image	Note
TS4: blastocyst	Present

Structure	Level	Pattern	Image	Note
TS13: future spinal cord neural plate	Present
TS13: neural tube	Present
TS13: neural ectoderm	Present	Regionally restricted		Expression was detected in the neural tube when it was partially closed.

Structure	Level	Pattern	Image	Note
TS17: brain	Strong
TS17: future spinal cord	Strong
TS17: forebrain	Present	Regionally restricted		Expression was detected in the dorsal region.
TS17: midbrain	Present	Regionally restricted		Expression was detected in the dorsal region.

Structure	Level	Pattern	Image	Note
TS19: forebrain	Present	Regionally restricted		Expression was detected in the dorsal region.
TS19: midbrain	Present	Regionally restricted		Expression was detected in the dorsal region.

Structure	Level	Pattern	Image	Note
TS20: cortical plate	Present
TS20: vagus ganglion	Present
TS20: vagal nerve trunk	Present	Regionally restricted		Expression was detected in nerve bundles around the cardiovascular system and respiratory tract.

Structure	Level	Pattern	Image	Note
TS22: dorsal root ganglion	Present

Structure	Level	Pattern	Image	Note
TS13: future brain	Present	Regionally restricted	1A	Some granules were detected on the ventricular and cortical cell layers.

Structure	Level	Pattern	Image	Note
TS20: glossopharyngeal nerve	Present		2C
TS20: thymus primordium	Present		2C
TS20: tongue	Present	Regionally restricted	2C	Expression was detected at the posterior of the tongue.

Structure	Level	Pattern	Image	Note
TS23: olfactory cortex	Present	Regionally restricted	2E	Expression was detected in the olfactory tract.
TS23: main olfactory bulb	Present		2E

Structure	Level	Pattern	Image	Note
TS22: retina	Present	Regionally restricted	4B	Expression was detected in the inner part of the retina.