On the side opposite to the desired direction of straightening, the number of cells increase (irreversibly), the node swells, thickens and begins to bend in the desired direction.
Upande wa kinyume na maelekezo ya straightening unaopendelewa, idadi ya seli Ongezeko (irreversibly), huvimba nodi, na thickens huanza bend katika mwelekeo unaopendelewa.