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4 days ago · As well as being dramatically effective against tuberculosis, streptomycin demonstrated activity against many other kinds of bacteria, including the typhoid fever bacillus. Two other early discoveries were gramicidin and tyrocidin, which are produced by bacteria of the genus Bacillus .
- The Editors of Encyclopaedia Britannica
1 day ago · Alexander Fleming (1881–1955) discovered modern day penicillin in 1928, the widespread use of which proved significantly beneficial during wartime. The first sulfonamide and the first systemically active antibacterial drug, Prontosil , was developed by a research team led by Gerhard Domagk in 1932 or 1933 at the Bayer Laboratories of the IG ...
4 days ago · A People's History Trivia Quiz. This quiz is based on Howard Zinn's "A People's History of the United States" (2003 edition). This quiz covers over 500 years of American History that is often overlooked in textbooks. A multiple-choice quiz by triathlonrules . Estimated time: 7 mins.
3 days ago · How much do you know about the origins of the United States? Start from Columbus's historic voyage and travel through to the end of the civil war, all in 20 questions!
2 days ago · Do you think you know everything about U.S. History? Try your luck and test your American history knowledge to see if you can pass!
5 days ago · U.S. History. » USA in the 19th.Century. E-Mail. Quiz # 400,199. Updated. Dec 03 21. # Qns. 10. Difficulty. Easy. Avg Score. 8 / 10. Plays. 337. Awards. Top 35% Quiz. Last 3 plays: Guest 81 ( 10/10 ), carp599 ( 7/10 ), srandall ( 8/10 ). One at a Time - Single Page - Timed Game. Question 1 of 10. 1.
5 days ago · April 12, 1861 - April 26, 1865. Location: United States. Participants: Confederate States of America. United States. Major Events: Battle of Antietam. Fort Pillow Massacre. Battle of Gettysburg. Battle of the Monitor and Merrimack. Battle of Monocacy. (Show more) Key People: James Buchanan. Ulysses S. Grant.
