ta Pathogenesis of Ss L-1 lL·6 M MHC ClassⅡl TNF 0 CD80/86 Serous acini lL·1 ▲FAs L23 FASL BAFF ICAM-1 MMP-9 Activated epithelial cell Membrane blebbing Nuclear colla ptosis-induced Apoptotic body T cell o° Mucous acini Macrophya A ge(OPathogenesis of SS 9