Table 2

Summary of differences in ductal expression of the transforming growth factor β (TGF-β) isoforms

		p Value
Comparison	Observed difference	TGF-β1	TGF-β2	TGF-β3
*TGF-β expression by ducts with and without associated lymphoid foci.
BLEL, benign lymphoepithelial lesion; NS, not significant; pSS, primary Sjogren’s syndrome.
pSS v control labial gland	pSS > control	NS	<0.02	<0.0012
pSS v BLEL	pSS = BLEL	NS	NS	NS
BLEL* v control parotid	BLEL < control	<0.04	NS	NS
BLEL infiltrated v BLEL non-infiltrated	Infiltrated > non-infiltrated	NS	NS	NS
Control labial gland v control parotid gland	Parotid > labial	<0.015	<0.015	<0.015