Microtubes are tiny, tube-like structures that can be found in various biological and synthetic contexts. In biology, they are part of the cytoskeleton in cells, helping to maintain shape and facilitate movement. These structures are made of proteins called tubulin and play a crucial role in cell division and intracellular transport. In the field of materials science, microtubes can refer to small tubes made from materials like carbon or polymers. These synthetic microtubes have applications in drug delivery, filtration, and nanotechnology, where their small size and unique properties allow for innovative solutions in various industries.