Probe:	Msx1 cDNA11
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS15: limb mesenchyme	Strong	Regionally restricted		Staining is present in the distal limb.
TS15: limb	Strong	Non-Uniform		Staining is strong in the anterior limb and moderate in the posterior limb.
TS15: 1st branchial arch	Moderate			Staining is present in the mandibular arch.
TS15: neural tube	Strong			There is strong staining in the medial and lateral neural tube.

Structure	Level	Pattern	Image	Note
TS17: limb mesenchyme	Strong	Regionally restricted		Staining is present in the progress zone.
TS17: limb	Strong			There is strong staining in the anterior and posterior limb.
TS17: 1st branchial arch maxillary component	Strong			Staining is present in the maxillary process.
TS17: 1st branchial arch	Strong			Staining is present in the mandibular arch.
TS17: 2nd branchial arch	Moderate			Staining is present in the hyoid arch.
TS17: hindbrain	Strong			Staining is present in the metencephalon.
TS17: neural tube	Strong	Regionally restricted		Staining is present in the medial neural tube.

Structure	Level	Pattern	Image	Note
TS19: apical ectodermal ridge	Moderate
TS19: limb mesenchyme	Strong	Regionally restricted		Staining is present in the progress zone.
TS19: limb	Moderate	Regionally restricted		Staining is present in the antero-distal and posterior-distal regions of the limb.
TS19: maxillary process	Strong
TS19: 1st branchial arch	Strong			Staining is present in the mandibular arch.
TS19: 2nd branchial arch	Strong			Staining is present in the hyoid arch.
TS19: genital tubercle	Strong			Staining is present in the external genitalia.
TS19: telencephalon	Moderate
TS19: hindbrain	Moderate			Staining is present in the metencephalon.
TS19: neural tube	Strong	Regionally restricted		Staining is present in the medial neural tube.