Looks like no one added any tags here yet for you.
Everyone can take
O
Blood Groups
ABO
Based on antigens…
A & B located on the outside of the blood cell
If A & B mix…
they will coagulate(blood becomes thicker)
Universal door
O
Universal Acceptor
AB
Rh Antigen
named after the Rhesus monkey(where it was found)
Rh+
has the antigen
Rh-
Does not have the antigen