Tiny, immobile cilia sense the direction of extracellular fluid during development to break left-right symmetry during early embryogenesis, researchers report in two independent studies that ...

If you are right-handed, the hair at the back of your head will grow in a clockwise direction. However, if you are left-handed, it could grow in either direction.

Consequently, calcium signals are only triggered when fluid strikes them in one direction, explaining why only cilia on the left side of an embryo are activated. “Our research has finally answered one ...