Figures 338 (upper) and 339 (lower) from Chapter 14 (Sperm Flagellum) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Transverse sections through midpiece and principal piece of several sperm from the n...

Echinoderm sperm nuclei are unusual in that chromatin fibers are clearly seen, allowing their diameter to be accurately determined. Here, sperm from the starfish P. miniata were treated to remove the ...

Echinoderm sperm nuclei are unusual in that chromatin fibers are clearly seen, allowing their diameter to be accurately determined. Here, sperm from the starfish P. miniata were treated to remove the ...

Phosphorus has a characteristic electron energy loss with an edge at 160 eV. The Zeiss 902 electron microscope permits images to be recorded at different energy losses which can be digitized and proce...

Phosphorus has a characteristic electron energy loss with an edge at 160 eV. The Zeiss 902 electron microscope permits images to be recorded at different energy losses which can be digitized and proce...

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...

This movie shows a Crane fly Nephrotoma suturalis sperm cell at metaphase of meiosis. Images were captured every 15 seconds for 35 minutes of cell division using polarized light microscopy. Eighth Pr...

Figure 426 (A-D) from Chapter 16 (Cytoplasmic matrix and cytoskeleton) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Stages of differentiation of the finch spermatozoon. A.)Early in spermatogenesis,...

This freeze fracture micrograph shows a region of membrane from the midpiece of opossum Didelphis virginiana sperm. This region of the sperm is notable for the repeating longitudinal bands composed ...

Transmission electron micrograph of unstained cryo-section of a sperm cell of the starfish Patiria miniata. Echinoderm sperm nuclei are unusual in that chromatin fibers are clearly seen, allowing the...