The invention further provides a method for promoting differentiation of {HEAD ~ embryonic stem cells} into {TAIL ~ functional hepatocytes} 
into
The invention further provides a method for promoting differentiation of { HEAD ~ embryonic stem cells } into { TAIL ~ functional hepatocytes }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL