Probe:	Fgf7 probe
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS22: Steno's gland mesenchyme	Absent		5A	Expression not associated with elongating Steno's duct. No expression in mesenchyme surrounding Steno's gland during duct elongation stages.

Structure	Level	Pattern	Image	Note
TS23: Steno's gland mesenchyme	Absent		5B	No expression near branching Steno's gland. No expression in mesenchyme surrounding Steno's gland during gland branching stages.

Structure	Level	Pattern	Image	Note
TS23: nasal septum mesenchyme	Present	Regionally restricted	5B inset	Expression maintained in mesenchyme surrounding nasolacrimal duct.

Structure	Level	Pattern	Image	Note
TS23: lateral nasal gland 2	Absent		5C	Expression not associated with elongated ducts of lateral nasal glands 2 (LNG2) and 3 (LNG3).
TS23: lateral nasal gland 3	Absent		5C	Expression not associated with elongated ducts of lateral nasal glands 2 (LNG2) and 3 (LNG3).
TS23: lateral nasal gland duct	Absent		5C	Expression not associated with elongated ducts of lateral nasal glands 2 (LNG2) and 3 (LNG3).

Structure	Level	Pattern	Image	Note
TS23: lateral nasal gland 5	Absent		5D	Expression not associated with budding lateral nasal gland 5 (LNG5).

Structure	Level	Pattern	Image	Note
TS22: maxillary sinus gland primordium epithelium	Absent		5E	Expression not associated with epithelium where maxillary sinus gland will bud.

Structure	Level	Pattern	Image	Note
TS23: maxillary sinus gland	Absent		5F	Expression not associated surrounding branching maxillary sinus gland.

Structure	Level	Pattern	Image	Note
TS22: nasal septum mesenchyme	Present	Widespread	5G	Expression throughtout nasal septum mesenchyme, close to forming medial nasal glands.

Structure	Level	Pattern	Image	Note
TS23: nasal septum mesenchyme	Present	Regionally restricted	5H	Expression in anterior septal mesenchyme close to elongating medial nasal gland ducts.