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Blood Types Chart | Blood Group Information | American Red Cross

www.redcrossblood.org/learn-about-blood/blood-types

In fact, there are eight different common blood types. ... There are four major blood groups determined by the presence or absence of two antigens – A and B  ...

Blood Types - KidsHealth

kidshealth.org/en/teens/blood-types.html

So medical experts group blood into types based on the different markers. The four main blood groups are: Type A. This blood type has a marker known as "A." ...

What's the Most Common Blood Type? | Blood Type Percentages

www.livescience.com/36559-common-blood-type-donation.html

Jul 13, 2012 ... The most common blood type among people in the U.S. is type O-positive.

Genes and Blood Type - Learn Genetics - University of Utah

learn.genetics.utah.edu/content/inheritance/blood/

Each type has different properties. The ABO blood type classification system uses the presence or absence of these molecules to categorize blood into four ...

Human Blood: ABO Blood Types

anthro.palomar.edu/blood/ABO_system.htm

All humans and many other primates can be typed for the ABO blood group. There are four principal types: A, B, AB, and O. There are two antigens and two ...

Blood type - definition of blood type by The Free Dictionary

www.thefreedictionary.com/blood type

Any of the four main types into which human blood is divided: A, B, AB, and O. Blood types are based on the presence or absence of certain substances, called  ...

Blood groups - Better Health Channel

www.betterhealth.vic.gov.au/health/conditionsandtreatments/blood-groups

The four blood groups are A, B, AB and O. Each of these will be either ... A person's blood type used to be called their 'Rhesus type' but now we say 'Rh type' .

The Most Precious Blood on Earth - The Atlantic

www.theatlantic.com/health/archive/2014/10/the-most-precious-blood-on-earth/381911/

Oct 27, 2014 ... For people with very rare types, obtaining lifesaving blood can involve a ... contacted the South African National Blood Service, which had four ...

Blood Types - Donate Blood - The Blood Connection

thebloodconnection.org/about-blood/blood-education/blood-types/

Human blood is divided into one of four main blood types (A, B, AB, and O) and are based on the presence or absence of specific antigens on red blood cells.

The Blood Type Diets: Blood Type and Your Health

www.dadamo.com/program.htm

Mar 3, 2015 ... Do you think knowing your blood type is only important in the event of a ... the missing link might be the four basic blood types: O, A, B, and AB.

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Blood Types - Infoplease

www.infoplease.com

Blood Types. Human blood is grouped into four types: A, B, AB, and O. Each letter refers to a kind of antigen, or protein, on the surface of red blood cells.

Blood groups - NHS Choices

www.nhs.uk

There are four different blood types, known as blood groups. The four main blood groups are A, B, AB and O.

Blood Type Test - WebMD

www.webmd.com

Sep 9, 2014 ... Blood type tests are done before a person receives a blood ... The ABO test shows that people have one of four blood types: A, B, AB, or O. If ...