There are actually 4 blood forms: A, B, AB, or O. Also, blood is possibly Rh-constructive or Rh-destructive. So When you've got style A blood, It can be both A optimistic or possibly a damaging. Which type you are is important if you want a blood transfusion. Plus your https://atozbookmarkc.com/story20136928/everything-about-blood-castle-mu-online