Karl Landsteiner

Major surgery was further facilitated by the development of safe blood transfusion, following Karl Landsteiner's identification of the major human blood groups in 1901.

Gowns, Germs and Steel William Bynum 2011

Karl Landsteiner (According to the Web site, he has saved more than more than 1 billion lives): In 1901, this Austrian scientist figured out that there are four types of human blood, A, B, AB and O, and some of them cannot be safely mixed with each other.

Web site celebrates often unknown scientists who have saved lives 2010

In 1909, a year before Rous isolated his cancer-causing virus, Karl Landsteiner implicated a virus as the cause for polio.

The Emperor of All Maladies Siddhartha Mukherjee 2010

In 1909, a year before Rous isolated his cancer-causing virus, Karl Landsteiner implicated a virus as the cause for polio.

The Emperor of All Maladies Siddhartha Mukherjee 2010

In 1909, a year before Rous isolated his cancer-causing virus, Karl Landsteiner implicated a virus as the cause for polio.

The Emperor of All Maladies Siddhartha Mukherjee 2010

It was here that Karl Landsteiner discovered blood types, and where Ignaz Semmelweiss first proposed hand-washing as a means of stopping bacterial infections.

Lapham's Quarterly: 1784: When Universal Health Care Was as Simple as Donating Your Body to Science 2009

IN A.D. 1900, Karl Landsteiner classified human blood into four types: A, B, AB, and 0, according to incompatibilities.

Tales of Known Space Niven, Larry 1975

The organ-bank problem could have started in the year 1900, when Karl Landsteiner separated human blood into four types: A, B, AB, and 0.

A Gift From Earth Niven, Larry 1968

The organ-bank problem could have started in the year 1900, when Karl Landsteiner separated human blood into four types: A, B, AB, and 0.

A Gift From Earth Niven, Larry 1968

In 1901 Karl Landsteiner published his discovery of the three main blood groups - A, B, and C

Yahoo! Answers: Latest Questions 2010