1. It is colorless as it does not contain hemoglobin.
2. It is irregular and relatively large.
3. Its diameter is about 7.5-20.00 µm.
4. Its size may vary.
5. It is nucleated and the nucleus is located at one end.
6. Its nucleus is initially spherical, ovoid or circular and becomes ovoid with age
or horseshoe-shaped.
7. Its average lifespan is 1-15 days.
8. It exhibits amoeboid movement. In this way it reaches the infected area and destroys the germs.