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...

This view shows a transverse ridge cut with its sloping side lying tangentially in the section plane. The granulo-fibrillar filled peaks are prominent. Striated bands appear sectioned closer to their ...

This view shows a transverse ridge cut with its sloping side lying tangentially in the section plane. The granulo-fibrillar filled peaks are prominent. Striated bands appear sectioned closer to their ...

Freeze fracture image of the surface ridges at the anterior end of the cell where kineties to the right and left sides come together at an angle at the anterior suture tip. In this area are numerous p...

A view of the cortex showing early endosomes are often cup shaped and can have several coated evaginations arising from the rim of the cup. TEM taken on 8/10/65 by R. Allen with RCA EMU3F operating at...

In quick-freeze deep-etch preparations in which cells are slam frozen the pellicle and the plasma membrane tends to be flattened. The double rings are present but only the outer ring of IMPs stand out...

A view of cortical fibers except the observer is looking at a cross-sectioned cell as though from anterior toward the posterior end of the cell; in this view the kd sections are seen on the left side ...

Freeze fracture image of the surface ridges at the anterior end of the cell where kineties to the right and left sides come together at an angle at the anterior suture tip. In this area are numerous p...

A high magnification view of the above septum in planar view and the septal pores that connect adjacent alveoli. The pores always lie next to the junction of the septum with the outer alveolar membran...

A high magnification view of the above septum in planar view and the septal pores that connect adjacent alveoli. The pores always lie next to the junction of the septum with the outer alveolar membran...