Account for a small percentage of blood
The immune system is always working to fight infections and protect the body from diseases. However, white blood cells only account for around 1% of the cells in your blood. While the number can be small, this is enough to get its job done perfectly. Indeed, you can find up to 5,000 to 10,000 white blood cells in each microliter of your blood. This will be increased during the time of injury or infection to keep your body safe. [10]
