Karl Landsteiner won the "Nobel Prize Physiology or Medicine" in 1930 for his discovery of what?

More Questions:

In soccer, how many yellow cards result in the ejection of a player from the game?

To which color group does St. Charles Place belong on a standard US Monopoly board?

A light shining atop of Big Ben's tower indicates what?

How many Super Bowl appearances did Brett Favre lead as part of the Green Bay Packers?

What is an airline's home base called?

Which Birthsign spans the months of January and February?

Bauxite ore is mined so it can be processed into what metal?

According to his theme song, what is the most wonderful thing about Tiggers?

Where did Bob Hope and Bing Crosby travel to in their first "Road" movie?

For how many years was the TV show "Night Court" on the air?

What blues legend sings with U2 on the song "When Love Comes to Town"?

What screen legend made his final appearance in the movie "Walk, Don't Run"?

Which of Henry VIII's wives may never have slept with him?

What treaty ended the Mexican War?

What military legend was nicknamed "The Fighting Quaker"?