Antinuclear antibody-negative systemic lupus erythematosus - how common?
D000974:Antibodies, Antinuclear / Q000032:analysis*; D005188:False Negative Reactions; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000175:diagnosis*
D000974:Antibodies, Antinuclear