Of the following, which is a WBC inclusion?

Döhle bodies are indeed classified as white blood cell (WBC) inclusions. They are small light blue-gray structures that can be observed in the cytoplasm of neutrophils, especially during infections or inflammatory processes. Their presence is a reflection of the cell's response to various stimuli, such as infections, and can indicate a stress response in the body.

In this context, the recognition of Döhle bodies helps in diagnosing or monitoring conditions associated with increased immune activity or systemic infection. They typically represent remnants of ribosomal RNA that have not fully degraded, indicating that the neutrophils are actively responding to a pathological process.

While toxic granules, Auer rods, and vacuoles are also significant findings in hematology, they serve different roles in the identification of certain conditions. Toxic granules indicate severe infection or inflammation, Auer rods are seen in certain leukemias, and vacuoles might indicate various forms of cellular distress or pathology. However, when specifically identifying WBC inclusions, Döhle bodies are the hallmark example.