Fig. 1From: Clopidogrel treatment may associate with worsening of endothelial function and development of new digital ulcers in patients with systemic sclerosis: results from an open label, proof of concept studyADP-dependent platelet activation in patients with SSc is not increased compared to patients with RA and healthy subjects (a). Clopidogrel effectively inhibits ADP-dependent platelet activation in patients with SSc (b)Back to article page