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Portrait of Otto Warburg (1883-1970), German biochemist and Nobel Laureate. Warburg studied chemistry at Berlin, then medicine at Heidelberg. The rest of his life was spent in Berlin, with the exception of military service in World War One. He concentrated on cellular respiration using his own device (Warburg manometer) to detect the uptake of oxygen by cells. Having studied normal cellular respiration, he continued by studying the effects of enzyme poisons (such as cyanide) and catalytic metals on this cell function. His work produced much of the basic knowledge of cell chemistry and enzyme action, and led to his Nobel Prize in 1931.
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