based on an estimated volume fraction of approximately 13 % for the chromaffin granules , as determined morphometrically ( kryvi , h. , flatmark , t. and terland , o . ( 1979 ) eur . j. cell biol . 20 , 76-82 ) , a concentration gradient ( chromaffin granules : cytosol ) of approx .
C0007634
cell
C1383501
cytosol