Their cytoplasm is bluish and acidic and the granules stain reddish-orange with eosin dye. They are spherical and the nucleus is 2-3 lobed. Their diameter is 12-17 µm. Their number is 150-400 per cubic milliliter. That is 1.5% of white blood cells. Lifespan 8-12 days. It is produced in red bone marrow. They are more common in the alimentary canal.