Diameters of microtubules change during rotation of the lipotubuloids of Ornithogalum umbellatum stipule epidermis as a result of varying protofilament monomers sizes and distance between them
Keywords: پروتوفیلمات; Microtubule diameters; Protofilaments; EM observations; Lipotubuloids; Ornithogalum umbellatum;