Which type of white blood cell is characterized by having segmented nuclei?

The white blood cell characterized by having segmented nuclei is neutrophils. These cells are essential components of the immune system and play a crucial role in the body's defense against infections. The segmentation of the nucleus allows neutrophils to be more flexible as they navigate through the bloodstream and tissues to reach sites of infection or inflammation.

Neutrophils typically have a multi-lobed nucleus, which appears to be divided into two or more distinct segments. This feature distinguishes them from other types of white blood cells, as monocytes generally have a single, large nucleus that is often kidney-shaped, while eosinophils and basophils possess nuclei that are either bi-lobed or have a more compact structure. Understanding the structural differences among these cells is critical for identifying them under a microscope and for appreciating their unique functions in the immune response.