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The Austrian Karl Landsteiner in 1901, when this scientist discovered that, it was safer to reduce the number of patients that died before from blood transfusion.
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What are 4 main blood groups?
A, ab, b and o
How many groups of blood groups are there?
There are four main blood groups: A, B, AB, and O. These also have a negative and a positive, I.e A+, A-, and so on. This would mean that there are eight different types of blood group: A+ A- B+ B- AB+ AB- O+ O-
Who discovered the 4 types of blood?
Karl landsteaner
How many main groups of clouds are there?
There are 4 main types of clouds.
Who discovered the 4 main moons of Saturn?
pumpkin
How many main blood types are there?
4 blood AB, A, B, and O
What are the five main inverbrate groups?
1. Mammals 2. Reptiles 3. Amphibians 4. In-vertebrates 5. Insects
What are the four main microbe groups?
Microbes are sorted into these 4 groups: Viruses, Fungi, Bacteria and Protozoa
What was the 4 social groups during the Middle Ages?
The four main groups in the 1500s wereGentlemenCitizensYeomenLabourers
Who can i give blood to if I'm type ABO?
there are no blood type as ABO there are practically 4 types of blood groups i.e. A, B, AB and O O blood group can donate blood to all other groups A can give to A and AB B can give to B and AB AB blood group can only give blood to AB only but can receive blood from all other groups
What are the 4 main blood group?
A, B, AB, and O.
How long do you have to wait to donate blood if you just got a tattoo?
4 Months... Some blood donor groups recommend a year.
