*Edit: So upon reading a few other reviews, I realize now that this book is meant for children or teens. I think it would be a fabulous resource for a young person. It is full of interesting facts without being overwhelming so I'm bumping my original 3 stars up to 4 to take into account the intended audience.
As much as I wanted to just looooove this book, it was only ok for me. Not to say someone else might not love it. I've always been interested in blood though and I work with it on a daily basis in a transfusion centre so I probably know more than the average person. I just felt the descriptions were all a little too simplified. Don't think I actually learned anything new.