we studied sera from 20 patients with polymyalgia rheumatica ( pmr ) /giant cell arteritis ( gca ) , 15 patients with systemic lupus erythematosus ( sle ) , 15 patients with the crest syndrome ( calcinosis , raynaud 's phenomenon , esophageal dysfunction , sclerodactyly , and telangietasia ) and 33 age and sex matched controls for cytotoxicity against human endothelial cells using a 51cr release assay .
C0206138
crest syndrome
C0006663
calcinosis