Accepted Answer. The Dragon Scale can be found on wild Horsea, Seadra, Dratini, and Dragonair. The only hitch to your plan is that you can only find them after getting the National Dex and Dratini and Dragonair can only be found by using the Super Rod, behind the Waterfall, at Mt. Coronet.
Microtubules are conveyer belts inside the cells. They move vesicles, granules, organelles like mitochondria, and chromosomes via special attachment proteins. They also serve a cytoskeletal role. Structurally, they are linear polymers of tubulin which is a globular protein.
Specialized motor proteins are attached to both the organelle and the microtubules (via chemical interactions). These proteins, called kinesins (which generally move towards the periphery) and dyneins (which move towards the center) walk the organelle up and down the microtubules.picture to the left, from Molecular Probes) This cytoskeleton is the surface that organelles can move on. Among the proteins that make up the cytoskeleton, microtubules are the predominant walkway organelles use to move around the cell.