This is an electron microscopy picture of a section through the flagellum of a Drosophila melanogaster sperm cell. The base of the flagellum is on the left, and the falgellum's skeleton extends ...

To learn more about the properties of the insect's penis, also known as its flagellum, Japanese scientists devised a “three-point bending test” to test strength along its length. The base of the ...

The top image is a fluorescence micrograph of a dividing solitary choanoflagellate showing its DNA (blue) and flagella and mitotic spindle (green). A small choanoflagellate colony is shown below ...