Antibody:	anti-CK4 (bs-1006R)
Detection system:	Biotinylated secondary antibody/[Strept]avidin coupled to horseradish peroxidase

Structure	Level	Pattern	Image	Note
TS23: submandibular gland	Present		2a	Expression is uniform in the epithelial buds.

Structure	Cell Type	Level	Pattern	Image	Note
TS27: submandibular gland epithelium	acinar cell of salivary gland	Present	Regionally restricted	2b	Expression is in myoepithelial and acinar cells.
TS27: submandibular gland epithelium	myoepithelial cell	Present	Regionally restricted	2b	Expression is in myoepithelial and acinar cells.
TS27: submandibular duct		Present	Regionally restricted	2b	Expression is in epithelial cells.
TS27: submandibular gland		Present	Regionally restricted	2b	Expression is in the terminal tubules.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: submandibular duct		Strong	Regionally restricted	2c	Expression is in the ductal epithelial cells of the developing intercalated and striated ducts.
TS28: submandibular gland epithelium	myoepithelial cell	Strong		2c	Expression is in myoepithelial cells.
TS28: submandibular gland epithelium	acinar cell of salivary gland	Weak	Regionally restricted	2c	Expression is in acinar cells.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: submandibular duct		Very strong	Regionally restricted	2d	Expression is in the luminal cells.
TS28: submandibular gland		Very strong	Regionally restricted	2d	Expression is in the basal cells of the granular convoluted tubule.
TS28: submandibular gland epithelium	myoepithelial cell	Very strong	Regionally restricted	2d	Expression is in myoepithelial cells.

Structure	Level	Pattern	Image	Note
TS23: sublingual gland	Present	Regionally restricted	2e	Expression is in the terminal epithelial bud cells.

Structure	Cell Type	Level	Pattern	Image	Note
TS27: sublingual duct		Present	Regionally restricted	2f	Expression is uniform in the ductal epithelial cells.
TS27: sublingual gland epithelium	acinar cell of salivary gland	Present	Regionally restricted	2f	Expression is in the acinar cells.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: sublingual duct		Present	Regionally restricted	2g	Expression is in the ductal epithelial cells.
TS28: sublingual gland epithelium	myoepithelial cell	Present	Regionally restricted	2g	Expression is in myoepithelial cells.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: sublingual duct		Strong	Regionally restricted	2h	Expression is in the ductal epithelial cells.
TS28: sublingual gland epithelium	myoepithelial cell	Strong	Regionally restricted	2h	Expression is in myoepithelial cells.
TS28: sublingual gland		Present	Regionally restricted	2h	Expression is at the periphery of some acini in serous demilunes.

Structure	Level	Pattern	Image	Note
TS23: parotid gland	Present	Regionally restricted	2i	Expression is uniform in the epithelial buds.

Structure	Level	Pattern	Image	Note
TS27: parotid gland	Strong	Regionally restricted	2j	Expression is in the terminal bud cells.
TS27: parotid duct	Present		2j

Structure	Cell Type	Level	Pattern	Image	Note
TS28: parotid gland acinus	acinar cell of salivary gland	Strong	Regionally restricted	2k	Expression is in acinar cells
TS28: parotid gland myoepithelium	myoepithelial cell	Present		2k
TS28: parotid gland		Present	Regionally restricted	2k	Expression is in the terminal tubules.
TS28: parotid duct		Present		2k

Structure	Cell Type	Level	Pattern	Image	Note
TS28: parotid gland acinus	acinar cell of salivary gland	Present	Regionally restricted	2l	Expression is in acinar cells.
TS28: parotid gland myoepithelium	myoepithelial cell	Present		2l
TS28: parotid duct		Present		2l