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What is the filamentous reticulum? When exposed in planar view lying
under the ribbed wall, the filamentous reticulum is seen to be
composed of a sheet of mutiple interdigitating rows of nodes separated
by stippled tripartite ribbons. The nodes are woven together across
the stippled ribbon in a zigzag pattern. The nodes appear to lie under
the edges of the ribs while the ribbons lie under the ridge itself.
This arrangement presumably stabilizes these ribs and prevents their
flattening. EM taken on 7/7/82 by R. Allen with Hitachi HU11A TEM.
Neg. 14,250X. Bar = 1µm.
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