Tags: Anatomical Structure.
Basophil granulocytes mostly referred to as basophils are the least common of the granulocytes representing about 0.01% to 0.3% of circulating white blood cells[citation needed].Basophils contain large cytoplasmic granules which obscure the cell nucleus under the microscope when stained. However when unstained the nucleus is visible and it usually has two lobes. The mast cell another granulocyte is similar in appearance and function.