Longitudinal section of a striated band lying superficially to an arm of the infraciliary lattice but not contacting it. A post is seen at the junction of a branch in the infraciliary lattice. TEM tak...

Paramecium also contains many crystals in older cultures. This micrograph is of a crystal taken from a cell in stationary phase (day 8 post-inoculation). Crystals are enclosed by a membrane and contai...

Large patches of rough ER surrounded by Golgi stacks (visible only at high magnification) have formed in the cytosol along with fields of lipid bodies. By day 2 these ER and lipid fields will be dispe...

A view of the micronuclei of Paramecium multimicronucleatum. The circumferential band cut in cross section in the upper nucleus looks like it is composed of a band of four microtubules. This band is c...

A high resolution view of the cytopharynx but in a dividing Didinium. This cytopharynx is in the proter (anterior) daughter cell. The lamellae, each consisting of a set of perpendicularly arranged mic...

A higher magnification view that shows the bilayer nature of the ciliary membrane, plasma membrane and the outer and inner (alveolar sac membranes of the alveoli. The 9-doublet + 2-singlet microtubula...

A cell with a flat alveolar sac system. It is not clear why some cells have expanded alveoli and others have flattened alveoli. Cacodylate buffered fixative. TEM taken on 2/3/69 by R. Allen with Phil...

Cross section of a cilium showing the 9 + 2 axoneme. Two dynein arms, inner and outer, of heterogeneous appearance arise from the complete microtubule of each doublet. Spokes extend from the doublets ...

Cross sections of a pair of basal bodies showing the triplet makeup of the 9 fibers; only one microtubular fiber is complete in each triplet while the other two microtubular fibers share some subunits...

Kinetodesmal fibers arise from the proximal ends of the basal bodies and curve upward and to the cell’s right of the kinety. Together with kds arising from more posterior basal bodies they form a st...