胆红素在肠道排出
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4.4. 结合胆红素在肠道转化为胆素原和胆素

Bilinogen enterohepatic circulation (胆素原的肠肝循环)
★肠道中少量的胆素原可被肠粘膜细胞重吸收,经门静脉入肝,其中大部分再随胆汁排入肠道,形成胆素原的肠肝循环。
★In the terminal ileum (回肠) and colon(结肠), a small fraction of the urobilinogens (尿胆素原) is reabsorbed and reexcreted through the liver to constitute the enterohepatic circulation of urobilinogen.


