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Alexander Fleming (1881-1955):  This Scottish doctor was growing bacteria on petri dishes when he noticed that some dishes had grown moldy.  Before he threw out the dishes, he noticed that the mold seemed to have killed the bacteria he was growing.  He called the substance Penicillin, and it was the very first antibiotic.

Sir Alexander Fleming (August 1881 - March is famous as the discoverer of the antibiotic substance lysozyme and for isolating the antibiotic substance penicillin from the fungus Penicillium notatum -

~Dr Alexander Fleming - Herbaceous Peony/ Paeonia ... A beautiful hybrid between the famous "Bunker hill" and "Sarah Bernhhardt"

Paeonia 'Dr Alexander Fleming' (Herbaceous Peony)

Dr Alexander Fleming Peony/Peonies - Eyes - Heavy Potted - Perennial - Each 1 Trade Gal by Growers Solution

797 Me gusta, 65 comentarios - Dr Alexander Kumar 🐾 (@dr.alexkumar) en Instagram: "Imagine there's no heaven It's easy if you try No hell below us Above us only sky Imagine all the…"

797 Me gusta, 65 comentarios - Dr Alexander Kumar 🐾 (@dr.alexkumar) en Instagram: "Imagine there's no heaven It's easy if you try No hell below us Above us only sky Imagine all the…"

Dr. Alexander Wunsch on the Sun, Circadian Rhythms and Light Therapies - Selfhacked

Alexander Wunsch on the Sun, Circadian Rhythms and Light Therapies - Selfhacked

Mantis Society Study Center: ESA-Astronaut Dr. Alexander Gerst erhält die Urani...

Mantis Society Study Center: ESA-Astronaut Dr. Alexander Gerst erhält die Urani...

Dr. Alexander Hamilton Pokes Fun at a Rustic - http://www.newenglandhistoricalsociety.com/dr-alexander-hamilton-pokes-fun-rustic/

Alexander Hamilton Bids Farewell to Connecticut and Its Ragged Money - New England Historical Society

Dr. Sadie Tanner Mossell Alexander, 1918 B.S. in Ed.; 1919 A.M.; 1921 Ph.D. in Economics; 1927, LL.B.; 1974, Hon. LL.D.

Sweet Sadie…Sadie Tanner Mossell Alexander That Is

Sadie Tanner Mossell Alexander – First African American woman to receive a Ph. in the USA, the first woman to receive a law degree from the University of Pennsylvania Law School, the first African American woman to be admitted to the Pennsylvania Bar.

Online World Look Amazing: RECORD - WORLD'S OLDEST MAN DR. ALEXANDER IMICH DIES AGED 111

Online World Look Amazing: RECORD - WORLD'S OLDEST MAN DR. ALEXANDER IMICH DIES AGED 111

Trading for a Living by Dr. Alexander Elder

Trading for a Living: Psychology, Trading Tactics, Money.: Trading for a Living: Psychology, Trading Tactics, Money Management…

Gravesite of the Imperial family found by Dr. Alexander Avdonin and his wife Galina Pavlovna; Gely Ryabov and his wife; and Michael Kachurov and his wife in 1977.  One of the moments of the official opening of the grave on the Koptiaki Road at the Pig's Meadow. In the back is Skeleton # 9, (A.Trupp). In front is skeleton # 4 (Nicholas II). Archive photo Obretenye Foundation

Gravesite of the Romanov Imperial Family discovered in 1977 on the Koptiaki Road at the Pig's Meadow by Dr. Alexander Avdonin and his wife Galina Pavlovna;