* In ''Series/TheSarahConnorChronicles'', they mentioned that Sarah had O- blood but John had AB- blood; this would mean that she couldn't possibly be his mother, barring vanishingly rare situations like mutation or [[http://en.wikipedia.org/wiki/Hh_antigen_system Bombay blood type]][[note]] For the record, type O is recessive, and Sarah is therefore by necessity homozygous for O. Johny could be AO (type A) or BO (type B), but type AB is not possible[[/note]]. Sarah being unable to give blood to the AB- Derek Reese despite being a universal donor could be correct, since she's giving whole blood containing plasma, not just blood cells, and compatibility for plasma is reversed compared to blood cells -- someone with type O is the least useful donor because their plasma could contain antibodies against non-O blood types.
** Definitely will, in fact. The reason ABO typing was discovered first is that people without the A or B antigen always have antibodies for it. However, there normally isn't enough blood plasma transferred from a single individual for this to matter very much compared to the problem of bleeding to death. Secondary blood antigens (there are many of them, a complete blood type analysis can be quite lengthy) do not always have antibodies against them if they are not present, but any specific individual might have them, so it's best to cross-match the donor and recipient to make sure it's not a problem if there's time. (Transfusion reaction isn't usually fatal with modern care if it's caught in time, but it's not the kind of thing you want an already injured person to go through if you can help it.)

to:

15th May '13 12:48:38 PM Katsuhagi

Send Katsuhagi a PM notification explaining the badness of natter: natter-fy

Changed line(s) 77 (click to see context) from:

to:

8th May '13 2:29:42 AM IsaacG

Send IsaacG a PM notification explaining the badness of natter: natter-fy

Changed line(s) 123 (click to see context) from:

to:

8th May '13 2:20:46 AM IsaacG

Send IsaacG a PM notification explaining the badness of natter: natter-fy

Changed line(s) 67 (click to see context) from: