the glial fibrillary acidic protein from normal and gliosed brain was separated into 4 bands ( components 1-4 ) ranging in molecular weight from 54 000 plus or minus 1000 to 40500 plus or minus 1000 by sodium dodecylsulfate gel electrophoresis at 7.5 % and 12.5 % acrylamide concentration .
C0006104
brain
C0086045
concentration