Pilar

A pilus (plural: pili) is a tiny hair-like structure on the surface of some bacteria. It helps bacteria attach to surfaces, like human cells or other bacteria, which is important for infection or forming colonies. Pili can also assist in exchanging genetic material between bacteria, promoting evolution and adaptation. They are made of protein and vary in length and number depending on the bacterial species. Overall, pili play a crucial role in bacterial survival, adherence, and genetic exchange in their environments.