Chekhov MacGuffin wrote:
AB is the universal blood plasma donor while O is the universal plasma receiver.
ccppfan wrote:
Nope, it's the other way round. We went through that in class last month.
Nope, I'm definitely right. It's because antibodies against these blood antigens are found in blood plasma. AB+ which has all the antigens and thus no antibodies to them, has safe-for-pretty-much-everyone* plamsa. O- types which could potentially have anti-A, anti-B, and anti-rhesus factor antibodies, could only be given to another O- person because the antibodies could attack the recipient's blood.
*"pretty much everyone" does not include rare bloodtypes which are not ABO±
nomemory wrote:
Edit: Talking about bloodgroups, according to a test made in school biology I'm B negative but I'm not to sure abut that since it's so rare. I do know for sure that I can't be AB since my mom's 0.
You should find out for sure since B- is rare anywhere. You never know when you will get into an accident and need blood on an emergency basis after all (or give it to someone else for that matter). If your parents don't know, you can check your birth certificate, or if it isn't there, donate blood somewhere and they will tell you. Finding out your bloodtype no matter how common or rare is good advice for anyone reading this comment.