Micrograph illustrating the general preservation of the cytoplasm in a Micrasterias cell stabilized by ultrarapid freezing. E-face of RER membranes depicting several spiral imprints of polysomes. Th...

The P-face of the plasma membrane of a semicell engaged in the synthesis of the secondary wall. Hexagonal arrays of rosettes of varying size and shape can be observed. Propanejet freezing. Technica...

The E-face of the plasma membrane of a semicell engaged in the synthesis of the secondary wall. Hexagonal arrays of rosettes of varying size and shape can be observed. The large circular indentation...

The P-face of the plasma membrane of a semicell engaged in the synthesis of the secondary wall. Hexagonal arrays of rosettes of varying size and shape can be observed. The large circular indentation...

The P-face of the plasma membrane of a semicell engaged in the synthesis of the secondary wall. Hexagonal arrays of rosettes of varying size and shape can be observed. The large circular indentation...

The image shows the surface of the ribbon-like myofibrils, with some remnants of the SR attached mostly at the Z lines. The regular disposition of attached cross bridges is visible in many areas. Mo...

The E-face of the plasma membrane of a semicell engaged in the synthesis of the secondary wall. Hexagonal arrays of rosettes of varying size and shape can be observed. The large circular indentation...

The P-face of the plasma membrane of a semicell engaged in the synthesis of the secondary wall. Hexagonal arrays of rosettes of varying size and shape can be observed. The large circular indentation...

The P-face of the plasma membrane of a semicell engaged in the synthesis of the secondary wall. Hexagonal arrays of rosettes of varying size and shape can be observed. Propanejet freezing. Technical d...