... tenocytes,but higher expression of sFas in the control tenocytes was seenconsistently with all TNF-α concentrations. *P <0.05, versus control.OA patients. As measured by ELISA, expression of soluble ... assay and flow cytometry. The effects of TNF-αwere studied by stimulation with TNF-α alone or 24 hoursbefore the induction of apoptosis. Tendon samples from non-OA patients were used as controls. ... Otto-von-Guericke-University, Magdeburg, Germany3Institute of Immunology, Otto-von-Guericke-University, Magdeburg, Germany4Institute of Neuropathology, Otto-von-Guericke-University, Magdeburg, Germany5Center of...