Rabbit psoas skeletal muscle fibers were blended in the presence of 5 mM MgATP to dissociate thick and thin filaments. The medium was then gently replaced with 0.3M KCl to dissociate thick filaments....

Rabbit psoas skeletal muscle fibers were blended in the presence of 5 mM MgATP to dissociate thick and thin filaments. The medium was then gently replaced with 0.3M KCl to dissociate thick filaments....

Upon electron bombardment, some elements, such as P, show an electron energy loss profile with a peak at a specific energy loss value. By collecting a series of images of a field at different energy l...

Didinium captures Paramecium. After reeling in the prey with cyclosis tugging at the attached toxicysts the proboscis opens to engage the Paramecium. This micrograph was taken in 1968 by G. Antipa on ...

Didinium captures Paramecium. At midingestion and showing metachronous waves of cilia within the two characteristic ciliary girdles of Didinium nasutum. This micrograph was taken in 1968 by G. Antipa ...

Upon electron bombardment, some elements, such as P, show an electron energy loss profile with a peak at a specific energy loss value. By collecting a series of images of a field at different energy l...

A frame from the grouped movie of a Balamuthia mandrillaris ameba within a culture of monkey kidney cells. Accompanying photographs are enlargements of the tips of pseudopodia to demonstrate their fle...

A frame from the grouped movie of a Balamuthia mandrillaris ameba within a culture of monkey kidney cells. Accompanying photographs are enlargements of the tips of pseudopodia to demonstrate their fle...

The micronuclear separation spindle. Nuclear pores are not empty perforations but are closed by nonetchable material. The separation spindle must elongate as microtubules lengthen and/or slide against...

A view of the ER on which IMPs are organized into lines, arcs, and circles indicating organization of proteins within the ER membrane and possibly peripheral proteins attached to its cytosolic surface...