significantly elevated frequencies of antibodies to actin ( 26 % ) and cytoskeletal antigens ( 97 % versus 29 % in normal sera ) were also found , but levels of igm rheumatoid factors , igm antibodies to single-stranded dna and antibodies to ribonucleoproteins ( nrnp/sm , sm and la ) were normal .
C0001271
actin
C0010853
cytoskeletal