Final answer:
Immature neutrophils, also known as band cells, are a type of white blood cell that is in the early stage of maturation. They have a single, elongated nucleus that appears like a band. Their appearance is characteristic of an immune response in the body, such as during a bacterial infection.
Step-by-step explanation:
The description you provided is characteristic of immature neutrophils, specifically band cells or band neutrophils. These are a type of white blood cell that is in the early stage of maturation. They have a single, elongated nucleus that appears like a band.
Immature neutrophils are typically found in the blood during an infection or inflammation, as they are part of the body's immune response. Their appearance under the microscope, with prominent nucleoli, immature chromatin, tight clusters, and scant cytoplasm, reflects their stage of development.
An example of a medical condition where band neutrophils are commonly observed is bacterial infection. In this case, the increased production of white blood cells, including immature neutrophils, is a response to the infection.