I find it amazing! With all the technology we have at our disposal, there is no such thing as artificial blood. Doctors can do amazing things: build artificial hearts, transplant organs, re-attach fingers and toes. But there is still no such thing as a human blood substitute. Donate today.
God has created the human body in such an amazing way. If one little thing goes wrong in your body and you can't make a specific protein or enzyme, your blood won't clot properly. The placenta creates a barrier that protects a mother from her babies blood, but allows nourishment to be passed to the growing human. It all points to the Creator and his intelligent design.