Developing trichocyst containing a paracrystalline core surrounded by amorphous material and an autophagosome containing mitochodrion. TEM taken on 1/25/74 by R. Allen with Hitachi HU11A operating at ...

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...

High resolution image of the macronucleus of Coleps hirtus. Heterochromatin and nucleoli are seen as smaller and larger stained bodies, respectively, in the macronucleus. Many nuclear pores exist in t...

A high resolution image of the surface of Coleps hirtus. Alveoli have longitudinal margins along the ciliary rows as well as lateral margins spaced at intervals of one or two basal bodies along the ro...

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 grazing section through the dorsal surface of Euplotes showing cross sections of cilia in four of the sparsely ciliated kineties . A layer of mitochondria underlies the pellicle. A replication band ...

In Euplotes a replication band of the macronucleus has larger heterochromatin masses on one side of the band after DNA replication has occurred. The replication band moves in the direction of lighter...

The transition from 3 to 2 rows of cilia can be seen in this view of the AZM. TEM taken on 7/24/67 by R. Allen with Philips 200 operating at 60kV. Neg. 1,370X. Bar = 5µm. Standard glutaraldehyde fix...