Figs. 315 from Don Fawcett's Chapter 12 (Centrioles). The dense material that forms the capitulum and the cross-striated columns of the connecting piece in spermatozoa is formed in intimate associatio...

Figs. 311 & 312 from Don Fawcett's Chapter 12 (Centrioles). In ciliogenesis, newly formed single centrioles, serving as basal bodies, are arranged in rows and oriented perpendicular to the cell surfac...

The sequences in this videotape illustrate the unusual crawling motility of the amoeboid sperm of the nematode parasite, Ascaris suum, an intestinal parasite of pigs. Ascaris sperm contain no myosins ...