M.G.
L.: You know - the importance of red blood cells is crucial! I will explain something to you:blood carries various substances that must be brought to one part of the body or another. Red blood cells are an important element of blood. Their job is to transport oxygen to the body's tissues in exchange for carbon dioxide, which is carried to and eliminated by the lungs.
Red blood cells are formed in the red bone marrow of bones. Do you want bone marrow issues? Maybe he's really looking out for Angela. Just trust his judgement this time - if he asks anything else of you of this element, then you should question his integrity.
Have a blessed day,
M. G.