The sperm of human beings, and a few other mammals like bulls, have oval-shaped heads and long tails called a flagellum. ‌A normal human sperm has an oval head like a paddle, a neck ...

Directly opposite stands an angel carrying whips with the inscription: “In flagella paratus sum” (“I am ready for the scourging”), sculpted by Lazzaro Morelli. An angel bearing the ...

When viewed under the microscope, sperm appear as oval-shaped cells with long tails (flagellum) that enable movement. Healthy sperm are those whose size and shape are relatively consistent and have ...

The researchers discovered that as sperm swim, their flagellum (tail) generates a whipping motion that creates fluid vortices around them. These swirling fluid patterns form a corkscrew-like structure ...

Previous studies had examined sperm movement near surfaces, but this is the first time scientists have visualized both the flagellum’s motion and the full 3D flow field surrounding the cell.

An underwater robot can delicately propel itself in any direction with its 12 flexible arms, inspired by the flagella of bacteria. Its creators claim it can carry out underwater inspections ...

The study shows that in liquid environments, where bacteria rely on movement to navigate, the rotation of flagella acts as a mechanical signal that turns on a set of genes required for DNA transfer.

The research team discovered that the rotation of flagella in Bacillus subtilis acts as a mechanical signal that activates key conjugation genes. This enables donor bacteria to form clusters with ...

(A) Representative micrographs show normal sperm morphology from a fertile control and abnormal spermatozoa from P10 with absent, short, coiled, bent, irregular flagella or abnormal head under light ...

Correspondence to Professor Patrice D Cani, Louvain Drug Research Institute, WELBIO, Metabolism and Nutrition, UCLouvain, Université catholique de Louvain, Avenue E. Mounier, 73 B1.73.11 B-1200, ...