The lifespan of white blood cells ranges from 13 to 20 days, after which time they are destroyed in the lymphatic system. When immature WBCs are first released from the bone marrow into the peripheral blood, they are called bands or stabs.. Leukocytes fight infection through a process known as phagocytosis.
9 Health Benefits of Sweet Potatoes. Not only are sweet potatoes readily available, inexpensive, and delicious, they have many other benefits for your health. 1. They are high in vitamin B6. Vitamin B6 helps reduce the chemical homocysteine in our bodies. Homocysteine has been linked with degenerative diseases, including heart attacks.
1 Sweet potatoes have a lot of nutrients, which are good for you body, such as vitamin B6, potassium, and iron which your body needs to help you grow strong.  Sweet potatoes are a good source of dietary fiber which helps to promote a healthy digestive tract.