Blood types?

[Jackalope]

B-, which is fairly rare. I can accept O-, which unfortunately is as well.

[GUBU]

B-, which is fairly rare.  I can accept O-, which unfortunately is as well.

Well if you're ever in Ireland and need blood, you can send me a PM.

[Thumpalumpacus]

Mine is also good advice: B pos.

[BrianSoddingBoru4]

My blood type? Thick, and coursing with the fury of my downtrodden but unbowed ancestors...

...Oh, wait. B-.

Boru

[ignoramus]

12 proof on weekends.

Hehe, apple cider, granny smith+

Blood donor? I'm not even a bloody owner!

[Ravenshire]

I'm a O+ plebeian... wait a minute that's a  good thing i am a universal donor

O negs are the universal donors. O pos can give to everybody other than O neg. Otoh, you can only receive blood from O pos and O neg.

O neg is the universal donor, but O pos can not give to everyone but O neg. They are limited to other positive blood types. B neg can actually be given to a wider variety than O pos.

AB pos is the type to be if you need a transfusion though. They are the universal recipient.

[vorlon13]

And the distribution:

ABO and Rh Blood Type
Frequencies in the United States
 ABO Type    Rh Type   %
O positive  37.4%      
O negative 6.6%
A positive 35.7% 
A negative 6.3%
B positive 8.5%
B negative 1.5%
AB positive 3.4% 
AB negative .6%

   (Source: Stanford School of Medicine: Blood Center)

[ignoramus]

Dumb question about blood types.
Do most evolved animals have different blood types?
Is it an evolutionary benefit to have multiple blood types in each species?
Or is it just an anomaly with neither negative or positive benefits towards the hosts survival.

[robvalue]

I'm O-shit I'm bleeding!

Nah, I don't know. I forgot.

[Brakeman]

My blood type is atheist.

Jesus' blood type was grape juice or wine.