<P> The ABO blood group system is widely credited to have been discovered by the Austrian scientist Karl Landsteiner , who identified the O , A , and B blood types in 1900 . Landsteiner originally described the O blood type as type `` C '' , and in parts of Europe it is rendered as `` 0 '' ( zero ) , signifying the lack of A or B antigen . Landsteiner was awarded the Nobel Prize in Physiology or Medicine in 1930 for his work . Alfred von Decastello and Adriano Sturli discovered the fourth type , AB , in 1902 . </P>
<P> The ABO blood group system is widely credited to have been discovered by the Austrian scientist Karl Landsteiner , who identified the O , A , and B blood types in 1900 . Landsteiner originally described the O blood type as type `` C '' , and in parts of Europe it is rendered as `` 0 '' ( zero ) , signifying the lack of A or B antigen . Landsteiner was awarded the Nobel Prize in Physiology or Medicine in 1930 for his work . Alfred von Decastello and Adriano Sturli discovered the fourth type , AB , in 1902 . </P>
the person responsible for the abo classification system for blood is
the person responsible for the abo classification system for blood is
Austrian scientist Karl Landsteiner
Austrian scientist Karl Landsteiner