Abstract
Glycogen content of neutrophils in the eel which were injected with some extraneous materials such as formalin-killed cells, 2% solution of casein and physiological saline were determined and their locomotion and phagocytosis were also examined. The eel injected with bacteria had the highest content of neutrophil glycogen, ranged from 74.6 μg to 105.9 μg per 107 neutrophils. The values in those injected with 2% solution of casein and physiological saline were 60.1-66.9 μg and about 45 μg, respectively. In the locomotion of the nuetrophils, the neutrophils from the eel injected with 2% solution of casein migrated best, and those from the eel injected with bacteria did in the next place. The bacterial phagocytosis of the neutrophils was examined in vitro in the whole blood. Glycogen-rich neutrophils showed the most remarkable phagocytosis, though the locomotion was not promoted.