The cell as a membranous network under microscope.

Cytoskeleton, microtubules, tubulin and colchicine : A review.

“…Therefore, it would be a membranous skeleton rather than a fibrous skeleton. Considering that the cell is a membranous network (Artvinli 1980), the membranous skeleton should be its fragile inner part, and tubulin should be one of its components. Thereby tubulin will be synthesized, transferred and secreted within this network.…”