Summary: During cytokinesis. a contractile ring consisting of unbranched filamentous actin (F-actin) and myosin II constricts at the cell equator. Unbranched F-actin is generated by formin. and without formin no cleavage furrow forms. https://www.bekindtopets.com/mega-sale-Israel-Flag-Distressed-iPhone-14-Pro-Max-Folio-Case-p26681-top-mega/