Zimbini iintlobo zomongo wethambo. Ngumongo obomvu owenziwe nge-myeloid tissue ubukhulu becala (yiyo eyenza ii-cells zegazi ezintsha). Ii-cells zegazi ezibomvu, ii-platelets, kunye noninzi lwee-cells zegazi ezimhlophe zenziwe ngomongo obomvu. Umongo oqanda wona wenziwe ngee-cells zama-futha kuphela. Zombini ezi ntlobo zomongo wamathambo zinee-blood vessels ezininzi kunye nee-capillaries.