Hi Jinny - I believe, and I will have verify this, that I read about the blood types in The Seven Daughter of Eve. If you have not read that book yet, do so. It's really wonderful and reads like a novel but chock full of information. I will check that for sure and let you know. How scooped are the teeth? I think noticeably concave. There's also something about the back of the head where there is a ridge right before the skull attaches to the spine. It's called the something ridge. Let me look that up also. I retain information pretty well but never remember where I found it. LOL We are rare. When I became pregnant I had to go through all of the shots and stay in bed - They were called Coombs somethings. I believe it was an anti-body but could be wrong. Sandra West Prowell