Karl Landsteiner described the original blood types--A, B and O--in 1900 and
doctors now recognize 23 blood group systems with hundreds of different "types.
Sep 29, 2011 ... Human blood types most likely came to exist to fend off infectious diseases. The
incompatibility of some blood types, however, is just an ...
But they can make the difference between blood being accepted or rejected after
a transfusion. So medical experts group blood into types based on the different ...
Jul 15, 2014 ... Why do 40 per cent of Caucasians have type A blood, while only 27 per cent of
Asians do? Where do different blood types come from, and what ...
Oct 22, 2012 ... Everyone's heard of the A, B, AB and O blood types. ... This chart lists the
antigens and antibodies made by the different ABO blood types.
Apr 11, 2016 ... After all, what's the evolutionary advantage for having such different blood types?
It certainly doesn't do us any favors when receiving a ...
no blood is typed. Have you ever heard of a blood donation? This is when
someone gives ... The four different blood types have been named type 0, A, B,
and AB. Type 0 blood has been found to mix safely with all the other types and
has been ...
Mar 20, 2014 ... We know that everybody's DNA pattern is different in the world. Then how can ´
we transfer blood from one person to another person and this ...
Apr 4, 2016 ... Although human blood is usually red it may have a different color, which ... It's
present in everyone's blood but is normally at a very low level.
Nov 20, 2007 ... The chemical test assumes that the composition of everyone's blood is ... same
amount of alcohol in their body, but different hematocrit levels, ...