Isolated mitochondria that have been quick-frozen, fractured and deep-etched show some space between the inner and outer membranes. Arcs of tubules, where they are tangentially fractured, show the hel...

A segment of the edge of the axoneme showing the outer axonemal dynein arms that extend from the A-subfiber of a doublet to bind to the B subfiber of the adjacent doublet. TEM taken on 4/21/88 by C. S...

A high resolution of a quick-freeze deep-etch rotary shadowed replica of a parasomal sac from which a clathrin-coated preendosomal vesicle has pinched off. The typical clathrin cage structure is prese...

A clump of at least seven small clathrin cages that are probably connected to an early endosome (below the fracture plane). The morphology of these cages shows a tighter packing than the larger clathr...

Quick-freeze deep-etch of the contractile vacuole E-fracture face. This face like the collecting canal membrane is porous indicating that many IMPs have been removed from this leaflet during fracturin...

Quick-freeze deep-etch rotary-shadowed replica of a portion of the chemically-unfixed cytopharynx. The cytopharynx is continuous with the plasma membrane and is covered by only one membrane which is p...

The E-fracture faces of the plasma membrane and cytopharyngeal membranes are continuous but differ in appearance since the cytopharyngeal membrane is studded with IMPs while the plasma membrane has fe...

Details of the binding of the carrier vesicle to a microtubule. Four bridges, thought to be cytoplasmic dynein arms, span the 40nm space between these two structures. The membrane of the vesicle has b...

In quick-freeze deep-etch micrographs it is not easy to distinguish peroxisomes from surrounding organelles. The organelle at the top of this micrograph may be a peroxisome based on its finely granula...

Quick-freeze deep-etch rotary-shadowed replica of a portion of the chemically-unfixed cytopharynx. The cytopharynx is continuous with the plasma membrane and is covered by only one membrane which is p...