This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Oval cells are bipotential progenitors of which of the following? 
Select and explain. 
A. Lung, B. Liver, C. Brain, D. Hea
B: Liver
Answer: B: Liver 
Explanation: The liver contains stem cells/progenitor cells in the canals of Hering, the junction between the biliary ductular system and parenchymal hepatocytes. Cells located in this niche can give rise to a population of precursor cells known as oval cells, which are bipotential progenitors, capable of differentiating into hepatocytes and biliary cells. Ref: Robbins 8th edition Chapter 3.