|
This freeze fracture view of the pellicle of V. microstoma
near the aboral end of the zooid shows the region where the width of
each circumferential alveolus is narrower and thus the strings of
fractured pits are closer together. In this case the E-fracture face
of the outer alveolar membrane (Eoam) is shown which
has fewer IMPs than the P-face of the outer alveolar membrane as seen
in the previous figure. Here the connections are indentations rather
than fractured necks. In a few areas the P-fracture face of the plasma
membrane (Ppm) is viewed where it was pinched into
the folds between rings that surround the cell. The plasma membrane,
like a similar view in figure 23, demonstrates the large number of
prominent IMPs on this face of the plasma membrane. large
arrow, direction of shadowing of freeze fracture replica. EM taken
on 11/11/75 by R. Allen with JEM 100B TEM. Neg. 21,578X. Bar = 0.20µm.
|
