There are actually 4 blood types: A, B, AB, or O. Also, blood is either Rh-constructive or Rh-detrimental. So When you've got style A blood, It is either A good or possibly a damaging. Which type you might be is very important if you need a blood transfusion. Plus https://bookmarkinglife.com/story5506598/examine-this-report-on-blood-castle-mu-online