regional differentiation of cell membranes with respect to their ability to precipitate pyroantimonate is found in at least three instances : ( a ) between the ciliary membranes and other portions of the cell membrane : the precipitate terminates abruptly at the ciliary base , ( b ) between the lf and i cell borders : the precipitate is asymmetric , favoring the lf side of the junction , and ( c ) between the septate junctional membrane and adjacent membrane : the precipitate occurs periodically throughout the septate junction region with the periodicity corresponding to the spacing of the septa .
C1178969
portions
C0007634
cell