Hans Kornberg wrote a paper entitled ‘Krebs and his trinity of cycles' commenting that every school biology student knows of the Krebs cycle, but few know that Krebs discovered two other cycles. These are (i) the ornithine cycle (urea cycle), (ii) the citric acid cycle (tricarboxylic acid or TCA cycle), and (iii) the glyoxylate cycle that was described by Krebs and Kornberg. Ironically, Kornberg, codiscoverer of the ‘glyoxylate cycle’, overlooked a fourth Krebs cycle – (iv) the uric acid cycle.

中文翻译：

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克雷布斯尿酸循环：一个被遗忘的克雷布斯循环

汉斯·科恩伯格（Hans Kornberg）撰写了一篇题为《克雷布斯及其周期的三位一体》的论文，其中指出每个学校生物学专业的学生都知道克雷布斯周期，但很少有人知道克雷布斯发现了另外两个周期。这些是（i）鸟氨酸循环（尿素循环），（ii）柠檬酸循环（三羧酸或TCA循环），和（iii）Krebs和Kornberg描述的乙醛酸循环。具有讽刺意味的是，“乙醛酸循环”的共同发现者科恩伯格忽略了第四个克雷布斯循环–（iv）尿酸循环。