Krebs and his trinity of cycles 

 -  Nature Reviews Molecular Cell Biology, 1(3), p.225-228, 2000 .
<br/><br/> Everyone who has ever taken biology at school has heard of the Krebs cycle, but few realize that Hans Krebs also discovered two other cycles. It is appropriate, at the centenary of his birth, to consider the circumstances and experiments that led Krebs to establish these metabolic pathways. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BIOCHEMISTRY<br/>CITRIC ACID CYCLE<br/>GLYOXYLATES<br/>HISTORY, 20TH CENTURY<br/>HUMANS<br/>ORNITHINE