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2. -Nathalia Nazareno
-Juan Esteban Cabrera
-Vanessa Vargas

4. There are the following blood types: A, B, AB and O. If a
person with a type of bloodtransfused blood is other can
become seriously ill or even die because the blood groupsare
classified by a band called agglutinogen that exists around the
erythrocytes in thecytoplasmic layer, if it captures a strange
group of blood can be destroyed, resulting in the destruction
of erythrocytes causing a chain reaction. So hospitals are
trying to findcompatible blood in blood banks, ie the
same blood type as the patient through centrifugesand
reagents.
It is noteworthy that less blood group compatibility is the
group "AB" on the contrary the group "0 -" is compatible with
all blood types, (negative and positive) while the "0 +" has
support positive blood types. See also: blood transfusion.

6. The ABO system is the MOST important
blood-group system in human-
blood transfusion.The associated anti-
A and anti-
B antibodies are Usually Immunoglobuli
n M, abbreviatedIgM, antibodies. ABO Ig
M antibodies are produced in the first ye
ars of
life by Sensitizationto Environmental Su
bstances Such as food,
bacteria, and viruses. The
O in ABO is OftenCalled 0 (zero,
or null) in other languages.

7. The Rh system is the second most significant blood-group system in
human-blood transfusion with currently 50 antigens. The most significant
Rh antigen is the D antigen, because it is the most likely to provoke an
immune system response of the five main Rh antigens. It is common for
D-negative individuals not to have any anti-D IgG or IgM antibodies,
because anti-D antibodies are not usually produced by sensitization
against environmental substances. However, D-negative individuals can
produce IgG anti-D antibodies following a sensitizing event: possibly a
fetomaternal transfusion of blood from a fetus in pregnancy or
occasionally a blood transfusion with D positive RBCs.[13] Rh disease can
develop in these cases. Rh negative blood types are much less in
proportion of Asian populations (0.3%) than they are in White (15%).In the
table below, the presence or absence of the Rh antigens is signified by the
+ or - sign, so that for example the A- group does not have any of the Rh
antigens.