in two dimensions , the molecular weight 49,000 to 50,000 band of the if preparation resolved to seven spots , whereas antiserum to glial fibrillary acidic ( gfa ) protein precipitated only two immediately adjacent radiolabeled in vitro synthesized products , with molecular weights of 49,000 to 50,000 .
C0021770
if
C0017626
glial fibrillary acidic