Fig. 5. 3-D images (A,C,E) and profiliograms (B,D,F) of different parts of the
glandular surface. (A,B) Part between glands (objective 50, magnification
50x0.4). (C,D) Gland in the upper part of the digestive zone (objective
20, magnification 20x1.3). (E,F) Gland in the middle part of the
digestive zone (objective 20, magnification 20x2.0). Arrows in A,C,E
show the axes for profiles in B,D,F, respectively.