at higher magnification and in thinner sections of cells impregnated with uranyl acetate-lead-copper citrate or postfixed in k-ferrocyanide-reduced osmium , the golgi apparatus appeared as a heterogeneous structure in which saccular regions characterized by stacks of saccules alternated with intersaccular regions made up of branching membranous tubules which bridged the saccules of adjacent stacks .
C0007634
cells
C0018042
golgi apparatus