Demographics Factors	pSS Patients (n = 26)		Healthy Subjects (n = 24)
Demographics Factors	Anti-Ro (+)	Anti-Ro (−)	Anti-Ro (+)	Anti-Ro (−)
Gender Male Female	0 14	0 12	0 0	0 24
Age, mean ± SD years	39.2 ± 12.9	48.6 ± 14.5	40 ± 11.8	42.6 ± 13.8
Xerostomia	++++	+	----	----
Xerophthalmia	++++	+	----	----
ANA positive Anti-Ro/SSA positive antibodies, % Anti-M₃mAChR positive antibody, % Anti-M₃mAChR peptide IgG, mean ± SEM	14 (100) 14 (100) 14 (100) 1,450 ± 0.12*	2 (16) 0 (0) 0 (0) 0.077 ± 0.03	ND ND ND	ND ND ND ND