And the rate at which the average rate at which our body breaks down recycles these red blood cells is about 2.5 million red blood cells every single second. So every single second, our liver, our spleen and the lymph nodes break down and recycle 2.5 million red blood cells. Now, this actually seems like a lot, but it's not. If we remember that our body contains about 25 trillion red blood cells circulating in our blood circulation system. Now, 90% of these red blood cells that are damaged are recycled in our spleen in our liver and in our lymph nodes by specialized white blood cells known as macrophages. And the remaining 10% of those red blood cells actually lice.