Neutrophil cell. Computer illustration of a human neutrophil cell. a white blood cell or leukocyte that will engulf and destroy microorganisms as an inflammatory responses to tissue damage. The cell's large lobed nucleus (blue) is seen. Within the cell membrane (light blue) are numerous granules (red, dark blue & purple) that contain enzymes responsible for bacterial destruction. Neutrophils are mobile and can move in an amoeboid manner.