Table 1. Immunofluorescence analysis of simple keratin expression in K7 knockout mice.

Tissue	K7 expression	K8	K18	K19	K20
Bladder	Urothelium	=	reduced*	=	=
Liver	Bile ducts	=	=	=	ne.
Colon	Basal cells in crypts, goblet cells	=	=	=	=
Kidney	Collecting tubules & ducts	=	reduced	=	ne.
Lung	Alveolar & bronchiolar epithelium	=	=	=	ne.
Pancreas	Ductal epithelial cells	=	=	=	ne.
Duodenum	Brunner’s gland & specific cells in crypt	=	=	=	=
Stomach	Squamo-columnar cells	= ¶	= ¶	= ¶	= ¶

 = intensity of staining and localization similar to wildtype tissue.

^*confirmation by western blotting.

ne. no protein expression.

^¶glandular cell staining.