by using immunoenzymatic procedures , we observed that levan of 5 x 10 ( 4 ) and 2 x 10 ( 5 ) daltons was intensely endocytosed by the cells and localized mainly in the cellular center , whereas levan of 2 x 10 ( 7 ) daltons remained mostly associated with the plasma membrane and formed surface aggregates .
C0007634
cellular
C0007603
plasma membrane