Bovine Spleen Extract forms precipitins with autoantibodies that bind Ro/SS-A, Sm, nRNP, Scl-70, and La/SS-B when tested by immunodiffusion.
Add 1.0 ml cold distilled water to lyophilized powder. (Some assay systems may require more concentrated or more diluted extract.) Some precipitate may occur but will not affect product performance. Repeated thawing will result in loss of activity.
After reconstituting, aliquot and store frozen at -20°C.