during equilibrium centrifugation in sucrose gradients , the cytoplasmic membranes isolated from bromostearate-grown cells banded at a density approximately 0.06 g/cm ( 3 ) greater than membranes isolated from oleate- or elaidate-grown cells , affording a complete separation between membranes which contain brominated fatty acids and those which do not .
C0007603
cytoplasmic membranes
C0007634
cells