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jan 1, 1901 - ABO Blood types

Description:

Karl Landsteiner researched blood types around 1901. Landsteiner classified the blood groups that we still use today in the ABO format. There are 4 different types of blood. A, B, AB, and O.

Added to timeline:

History of Biotechnology

ByIsabella Santoni
18 Jan 2018
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Date:

jan 1, 1901
Now
~ 125 years ago
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